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97-545: The Swinomish Channel is partly natural and partly dredged . Before being dredged, it was a collection of shallow tidal sloughs , salt marshes , and mudflats known as Swinomish Slough. The United States Army Corps of Engineers used dredging and diking to create a navigable channel, completed in 1937 during the Great Depression . The channel is heavily used by fishing boats, tugs, recreational craft, and shallow-draft freight vessels. To maintain navigable depths,

194-528: A cosmopolitan city marked by cultural and economic exchanges with Southern Europe, the Middle East, North Africa and Asia. In Europe, the city has the third largest Jewish community after London and Paris . In the 1990s, the Euroméditerranée project for economic development and urban renewal was launched. New infrastructure projects and renovations were carried out in the 2000s and 2010s:

291-402: A dragline . This technique is often used in excavation of bay mud . Most of these dredges are crane barges with spuds , steel piles that can be lowered and raised to position the dredge. A backhoe/dipper dredger has a backhoe like on some excavators . A crude but usable backhoe dredger can be made by mounting a land-type backhoe excavator on a pontoon . The six largest backhoe dredgers in

388-490: A capacity of 6,000 cubic metres per hour (59,000 cu ft/ks). An even larger dredger, retired in 1980, was the U.S. Army Corps of Engineers Essayons , which was 525.17 feet (160.07 m) long. The Mallard II , a clamshell dredger that maintains levees in San Francisco Bay , has operated continuously since being built in 1936. Dredgers are often equipped with dredge monitoring software to help

485-449: A cultural, high-tech economy. The Marseille region is home to thousands of companies, 90% of which are small and medium enterprises with less than 500 employees. Among the most famous are CMA CGM , container-shipping giant; Compagnie maritime d'expertises (Comex), a leader in sub-sea engineering and hydraulic systems; Airbus Helicopters , an Airbus division; Azur Promotel, an active real estate development company; La Provence ,

582-439: A few different types of dredge hoses that differ in terms of working pressure, float-ability, armored or not etc. Suction hoses, discharge armored hoses and self-floating hoses are some of the popular types engineered for transporting and discharging dredge materials. Some even had the pipes or hoses customised to exact dredging needs etc. Other times, it is pumped into barges (also called scows ), which deposit it elsewhere while

679-567: A few situations the excavation is undertaken by a specialist floating plant , known as a dredger. Usually the main objectives of dredging is to recover material of value, or to create a greater depth of water. Dredging systems can either be shore-based, brought to a location based on barges , or built into purpose-built vessels. Dredging can have environmental impacts: it can disturb marine sediments , leading to both short- and long-term water pollution , damage or destroy seabed ecosystems , and can release legacy human-sourced toxins captured in

776-482: A long tube like some vacuum cleaners but on a larger scale. A plain suction dredger has no tool at the end of the suction pipe to disturb the material. A trailing suction hopper dredger (TSHD) trails its suction pipe when working. The pipe, which is fitted with a dredge drag head , loads the dredge spoil into one or more hoppers in the vessel. When the hoppers are full, the TSHD sails to a disposal area and either dumps

873-641: A major center for immigrant communities from former French colonies in Africa, such as French Algeria . Marseille is a major French centre for trade and industry, with excellent transportation infrastructure (roads, sea port and airport). Marseille Provence Airport is the fourth largest in France. In May 2005, the French financial magazine L'Expansion named Marseille the most dynamic of France's large cities, citing figures showing that 7,200 companies had been created in

970-496: A process known as dewatering. Current dewatering techniques employ either centrifuges, geotube containers, large textile based filters or polymer flocculant /congealant based apparatus. In many projects, slurry dewatering is performed in large inland settling pits, although this is becoming less and less common as mechanical dewatering techniques continue to improve. Similarly, many groups (most notable in east Asia) are performing research towards utilizing dewatered sediments for

1067-411: A shipping channel through coral reefs . A bucket dredger is equipped with a bucket dredge, which is a device that picks up sediment by mechanical means, often with many circulating buckets attached to a wheel or chain . A grab dredger picks up seabed material with a clam shell bucket , which hangs from an onboard crane or a crane barge , or is carried by a hydraulic arm, or is mounted like on

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1164-542: A trading port since ancient times. In particular, it experienced a considerable commercial boom during the colonial period and especially during the 19th century, becoming a prosperous industrial and trading city. Nowadays the Old Port still lies at the heart of the city, where the manufacture of Marseille soap began some six centuries ago. Overlooking the port is the Basilica of Notre-Dame-de-la-Garde or "Bonne-mère" for

1261-526: Is a bar or blade which is pulled over the seabed behind any suitable ship or boat. It has an effect similar to that of a bulldozer on land. The chain-operated steam dredger Bertha , built in 1844 to a design by Brunel and as of 2009 was the oldest operational steam vessel in Britain, was of this type. This is an early type of dredger which was formerly used in shallow water in the Netherlands. It

1358-665: Is a city in southern France , the prefecture of the department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur region . Situated in the Provence region, it is located on the coast of the Mediterranean Sea , near the mouth of the Rhône river. Marseille is the second-most populous city in France, after Paris , with 873,076 inhabitants in 2021. Marseille with its suburbs and exurbs create

1455-466: Is a city that has its own unique culture and is proud of its differences from the rest of France. Today it is a regional centre for culture and entertainment with an important opera house , historical and maritime museums, five art galleries and numerous cinemas, clubs, bars and restaurants. Marseille has a large number of theatres, including La Criée, Le Gymnase and the Théâtre Toursky. There

1552-593: Is also an extensive arts centre in La Friche , a former match factory behind the Saint-Charles station. The Alcazar , until the 1960s a well known music hall and variety theatre , has recently been completely remodelled behind its original façade and now houses the central municipal library. Other music venues in Marseille include Le Silo (also a theatre) and GRIM . Marseille has also been important in

1649-511: Is also an important arrival base for millions of people each year, with 2.4 million including 890,100 from cruise ships. With its beaches, history, architecture and culture (24 museums and 42 theatres), Marseille is one of the most visited cities in France, with 4.1 million visitors in 2012. They take place in three main sites, the Palais du Pharo , Palais des Congrès et des Expositions (Parc Chanot) and World Trade Center. In 2012 Marseille hosted

1746-463: Is divided into 16 municipal arrondissements , which are themselves informally divided into 111 neighbourhoods (French: quartiers ). The arrondissements are regrouped in pairs, into 8 sectors, each with a mayor and council (like the arrondissements in Paris and Lyon ). Municipal elections are held every six years and are carried out by sector. There are 303 councilmembers in total, two-thirds sitting in

1843-585: Is fed by the local catch; a daily fish market is still held on the Quai des Belges of the Old Port. The economy of Marseille and its region is still linked to its commercial port, the first French port and the fifth European port by cargo tonnage , which lies north of the Old Port and eastern in Fos-sur-Mer . Some 45,000 jobs are linked to the port activities and it represents €4 billion of added value to

1940-824: Is forbidden unless authorized by a permit issued by the Army Corps of Engineers . Due to potential environmental impacts, dredging is often restricted to licensed areas, with vessel activity monitored closely using automatic GPS systems. According to a Rabobank outlook report in 2013, the largest dredging companies in the world are in order of size, based on dredging sales in 2012 Notable dredging companies in North America Notable dredging companies in South Asia Marseille Marseille or Marseilles ( French : Marseille ; Provençal Occitan : Marselha ; see below )

2037-553: Is how Marseille responded in 2005, when ethnic populations living in other French cities' suburbs rioted , but Marseille remained relatively calm. Marseille served as the European Capital of Culture for 2013 along with Košice . It was chosen to give a 'human face' to the European Union to celebrate cultural diversity and to increase understanding between Europeans. One of the intentions of highlighting culture

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2134-424: Is mainly used in harbours and other shallow water. Excavator dredge attachments The excavator dredge attachment uses the characteristics of cutter-suction dredgers, consisting of cutter heads and a suction pump for transferring material. These hydraulic attachments mount onto the boom arm of an excavator allowing an operator to maneuver the attachment along the shoreline and in shallow water for dredging. This

2231-571: Is thought it may come from Ancient Ligurian , which was the local language before the arrival of the Greeks. Forms of the name include: Marseille is the third-largest metropolitan area in France after Paris and Lyon. To the east, starting in the small fishing village of Callelongue on the outskirts of Marseille and stretching as far as Cassis , are the Calanques , a rugged coastal area interspersed with small fjord -like inlets. Farther east still are

2328-488: Is to help reposition Marseille internationally, stimulate the economy, and help to build better interconnection between groups. Marseille-Provence 2013 (MP2013) featured more than 900 cultural events held throughout Marseille and the surrounding communities. These cultural events generated more than 11 million visits. The European Capital of Culture was also the occasion to unveil more than 600 million euros in new cultural infrastructure in Marseille and its environs, including

2425-410: Is usually sucked up by a wear-resistant centrifugal pump and discharged either through a pipe line or to a barge. Cutter-suction dredgers are most often used in geological areas consisting of hard surface materials (for example gravel deposits or surface bedrock) where a standard suction dredger would be ineffective. They can, if sufficiently powerful, be used instead of underwater blasting. As of 2024,

2522-486: The Leiv Eriksson are: 46,000 cubic metre hopper and a design dredging depth of 155 m. Next largest is HAM 318 ( Van Oord ) with its 37,293 cubic metre hopper and a maximum dredging depth of 101 m. A cutter-suction dredger's (CSD) suction tube has a cutting mechanism at the suction inlet. The cutting mechanism loosens the bed material and transports it to the suction mouth. The dredged material

2619-522: The Aix-Marseille-Provence Metropolis , with a population of 1,911,311 at the 2021 census. Founded c.  600 BC by Greek settlers from Phocaea , Marseille is the oldest city in France, as well as one of Europe's oldest continuously inhabited settlements . It was known to the ancient Greeks as Massalia ( Greek : Μασσαλία , romanized :  Massalía ) and to Romans as Massilia . Marseille has been

2716-607: The Bouches-du-Rhône department . Because of its pre-eminence as a Mediterranean port, Marseille has always been one of the main gateways into France. This has attracted many immigrants and made Marseille a cosmopolitan melting pot . By the end of the 18th century about half the population originated from elsewhere in Provence mostly and also from southern France. Economic conditions and political unrest in Europe and

2813-699: The Gulf of Lion and the Camargue region in the Rhône delta . The airport lies to the north west of the city at Marignane on the Étang de Berre . The city's main thoroughfare (the wide boulevard called the Canebière ) stretches eastward from the Old Port to the Réformés quarter. Two large forts flank the entrance to the Old Port—Fort Saint-Nicolas on the south side and Fort Saint-Jean on

2910-525: The MuCEM designed by Rudy Ricciotti . Early on, immigrants came to Marseille locally from the surrounding Provence region. By the 1890s immigrants came from other regions of France as well as Italy. Marseille became one of Europe's busiest ports by 1900. Marseille has served as a major port where immigrants from around the Mediterranean arrive. Marseille continued to be multicultural. Armenians from

3007-481: The Nile were channelled and wharfs built at the time of the pyramids (4000 BC), there was extensive harbour building in the eastern Mediterranean from 1000 BC and the disturbed sediment layers gives evidence of dredging. At Marseille , dredging phases are recorded from the third century BC onwards, the most extensive during the first century AD. The remains of three dredging boats have been unearthed; they were abandoned at

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3104-586: The Sainte-Baume (a 1,147 m (3,763 ft) mountain ridge rising from a forest of deciduous trees), the city of Toulon and the French Riviera . To the north of Marseille, beyond the low Garlaban and Etoile mountain ranges , is the 1,011 m (3,317 ft) Mont Sainte Victoire . To the west of Marseille is the former artists' colony of l'Estaque ; farther west are the Côte Bleue ,

3201-481: The World Water Forum . Several urban projects have been developed to make Marseille attractive. Thus new parks, museums, public spaces and real estate projects aim to improve the city's quality of life ( Parc du 26e Centenaire , Old Port of Marseille , numerous places in Euroméditerranée ) to attract firms and people. Marseille municipality acts to develop Marseille as a regional nexus for entertainment in

3298-481: The association football club Olympique de Marseille , one of the most successful and widely supported clubs in France, Marseille has also hosted matches at the 1998 World Cup and Euro 2016 . It is also home to several higher education institutions in the region, including the University of Aix-Marseille . A resident of Marseille is a Marseillais . The name of Marseille is of unknown ultimate origin, but it

3395-701: The inter-war period ; Sub-Saharan Africans after 1945; Maghrebi Jews in the 1950s and 1960s; the Pieds-Noirs from the former French Algeria in 1962; and then from Comoros . At the 2019 census, 81.4% of the inhabitants of the Marseille metropolitan area were natives of Metropolitan France , 0.6% were born in Overseas France , and 18.0% were born in foreign countries (two-fifth of whom French citizens from birth, in particular Pieds-Noirs from Algeria arrived in Metropolitan France after

3492-662: The tramway , the renovation of the Hôtel-Dieu into a luxury hotel, the expansion of the Velodrome Stadium , the CMA CGM Tower , as well as other quayside museums such as the Museum of Civilisations of Europe and the Mediterranean (MuCEM). As a result, Marseille now has the most museums in France after Paris . The city was named European Capital of Culture in 2013 and European Capital of Sport in 2017. Home of

3589-579: The 18th century (previously several cities in France were involved in cardmaking). Another local tradition is the making of santons , small hand-crafted figurines for the traditional Provençal Christmas creche . Since 1803, starting on the last Sunday of November, there has been a Santon Fair in Marseille; it is currently held in the Cours d'Estienne d'Orves, a large square off the Vieux-Port. Marseille's main cultural attraction was, since its creation at

3686-582: The Centre Bourse in the 1st arrondissement; it is linked by the Boulevard d'Athènes to the Canebière. The city has a hot-summer mediterranean climate ( Köppen : Csa ) with cool-mild winters with moderate rainfall, because of the wet westerly winds, and hot, mostly dry summers. December, January, and February are the coldest months, averaging temperatures of around 12 °C (54 °F) during

3783-626: The Fête du Panier in June. On 21 June, there are dozens of free concerts in the city as part of France's Fête de la Musique , featuring music from all over the world. Being free events, many Marseille residents attend. Marseille hosts a Gay Pride event in early July. In 2013, Marseille hosted Europride , an international LGBT event, 10 July–20. At the beginning of July, there is the International Documentary Festival. At

3880-555: The Mediterranean. Nearby, people sell fresh fish and men from Tunisia drink tea. Although most Armenians arrived after the Armenian Genocide , Armenians had a long presence even before the 20th and late 19th centuries. Armenians, having an extensive trade network worldwide, massively traded with Marseille and its port. Most notably, during the 16th century, and after the Armenians gained a monopoly over Iranian silk, which

3977-743: The Music Conservatory, the Cours Honoré-d'Estienne-d'Orves off the Old Port and the area around the Hôtel de Ville. To the south east of central Marseille in the 6th arrondissement are the Prefecture and the monumental fountain of Place Castellane, an important bus and metro interchange. To the south west are the hills of the 7th and 8th arrondissements , dominated by the basilica of Notre-Dame de la Garde . Marseille's main railway station— Gare de Marseille Saint-Charles —is north of

Swinomish Channel - Misplaced Pages Continue

4074-466: The Ottoman Empire began arriving in 1913. In the 1930s, Italians settled in Marseille. After World War II, a wave of Jewish immigrants from North Africa arrived. In 1962, a number of French colonies gained their independence, and the French citizens from Algeria, Morocco, and Tunisia arrived in Marseille. The city had an economic downturn and lost many jobs. Those who could afford to move left and

4171-601: The Port de la Joliette (now part of Marseille-Fos Port ) during the Second Empire and now contains restaurants, offices, bars and hotels and functions mostly as a private marina. The majority of the port and docks , which experienced decline in the 1970s after the oil crisis , have been recently redeveloped with funds from the European Union . Fishing remains important in Marseille and the food economy of Marseille

4268-578: The Roman Siege of Massilia in 49 BC, during Caesar's Civil War , in which Massalia sided with the exiled faction at war with Julius Caesar . Afterward, the Gallo-Roman culture was initiated. The city maintained its position as a premier maritime trading hub even after its capture by the Visigoths in the fifth century AD, although the city went into decline following the sack of AD 739 by

4365-570: The Sahara. Snowfalls are infrequent; over 50% of years do not experience a single snowfall. The hottest temperature was 40.6 °C (105.1 °F) on 26 July 1983 during a great heat wave, the lowest temperature was −16.8 °C (1.8 °F) on 13 February 1929 during a strong cold wave. Marseille was founded as the Greek colony of Massalia c.  600 BC , and was populated by Greek settlers from Phocaea (modern Foça , Turkey). It became

4462-573: The Swinomish Channel must be dredged at least every three years. Dedicated federal funding for continued dredging was eliminated in the 1990s. A study in 2004–2008 determined that sedimentation would render the channel's north end impassable for virtually all vessels by 2015, and its south end by 2019. The channel was dredged again in 2008. In 2012 the Army Corps of Engineers received funding from Congress for another dredging project, which

4559-590: The arts. It has been the birthplace and home of many French writers and poets, including Victor Gélu  [ fr ] , Valère Bernard , Pierre Bertas , Edmond Rostand and André Roussin . The small port of l'Estaque on the far end of the Bay of Marseille became a favourite haunt for artists, including Auguste Renoir , Paul Cézanne (who frequently visited from his home in Aix ), Georges Braque and Raoul Dufy . Rich and poor neighborhoods exist side by side. Although

4656-478: The average sunshine in the country is around 1,950 hours. It is also the driest major city with only 532.3 mm (21 in) of precipitation annually, mainly due to the mistral , a cold, dry wind originating in the Rhône Valley that occurs mostly in winter and spring and which generally brings clear skies and sunny weather to the region. Less frequent is the sirocco , a hot, sand-bearing wind, coming from

4753-532: The beds of streams. During the renaissance Leonardo da Vinci drew a design for a drag dredger. Dredging machines have been used during the construction of the Suez Canal from the late 1800s to present day expansions and maintenance. The completion of the Panama Canal in 1914, the most expensive U.S. engineering project at the time, relied extensively on dredging. These operate by sucking through

4850-620: The bottom of the harbour during the first and second centuries AD. The Banu Musa brothers during the Muslim Golden Age in while working at the Bayt-Al-Hikmah (house of wisdom) in Baghdad, designed an original invention in their book named ‘ Book of Ingenious Devices ’, a grab machine that does not appear in any earlier Greek works. The grab they described was used to extract objects from underwater, and recover objects from

4947-525: The capacity to 2 million TEU. Marseille is connected with the Rhône via a canal and thus has access to the extensive waterway network of France. Petroleum is shipped northward to the Paris basin by pipeline. The city also serves as France's leading centre of oil refining. In recent years, the city has also experienced a large growth in service sector employment and a switch from light manufacturing to

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5044-430: The city is not without crime, Marseille has a larger degree of multicultural tolerance. Urban geographers say the city's geography, being surrounded by mountains, helps explain why Marseille does not have the same problems as Paris. In Paris, ethnic areas are segregated and concentrated in the periphery of the city. Residents of Marseille are of diverse origins, yet appear to share a similar particular identity. An example

5141-539: The city since 2000. As of 2019 , the Marseille metropolitan area had a GDP amounting to US$ 81.4 billion , or US$ 43,430 per capita (purchasing power parity). Historically, the economy of Marseille was dominated by its role as a port of the French Empire, linking the North African colonies of Algeria, Morocco and Tunisia with Metropolitan France . The Old Port was replaced as the main port for trade by

5238-533: The city, whereas the National Front has received significant support. At the last municipal election in 2014, Marseille was divided between the northern arrondissements dominated by the left (PS) and far-right (FN) and the southern part of town dominated by the conservative (UMP). Marseille is also divided in twelve cantons , each of them sending two members to the Departmental Council of

5335-483: The city. Due to these policies and the multiculturalism of the city of Marseille, Armenians became very wealthy, and the legacy of the Armenians in the city still lives on. The most commonly used tarot deck takes its name from the city; it has been called the Tarot de Marseille since the 1930s—a name coined for commercial use by the French cardmaker and cartomancer Paul Marteau, owner of B–P Grimaud. Previously this deck

5432-605: The construction industry. Dredging is a four-part process: loosening the material, bringing the material to the surface (together extraction), transportation and disposal. The extract can be disposed of locally or transported by barge or in a liquid suspension in pipelines. Disposal can be to infill sites, or the material can be used constructively to replenish eroded sand that has been lost to coastal erosion , or constructively create sea-walls, building land or whole new landforms such as viable islands in coral atolls . Ancient authors refer to harbour dredging. The seven arms of

5529-569: The day and 4 °C (39 °F) at night. July and August are the hottest months, averaging temperatures of around 28–30 °C (82–86 °F) during the day and 19 °C (66 °F) at night in the Marignane airport [35 km (22 mi) from Marseille] but in the city near the sea the average high temperature is 27 °C (81 °F) in July. Marseille receives the most sunlight of any French city, 2,897.6 hours per year on average, while

5626-495: The dredge continues its work. A number of vessels, notably in the UK and NW Europe de-water the hopper to dry the cargo to enable it to be discharged onto a quayside 'dry'. This is achieved principally using self discharge bucket wheel, drag scraper or excavator via conveyor systems. When contaminated (toxic) sediments are to be removed, or large volume inland disposal sites are unavailable, dredge slurries are reduced to dry solids via

5723-482: The dredge operator position the dredger and monitor the current dredge level. The monitoring software often uses Real Time Kinematic satellite navigation to accurately record where the machine has been operating and to what depth the machine has dredged to. In a "hopper dredger", the dredged materials end up in a large onboard hold called a "hopper." A suction hopper dredger is usually used for maintenance dredging. A hopper dredge usually has doors in its bottom to empty

5820-425: The dredged materials, but some dredges empty their hoppers by splitting the two-halves of their hulls on large hydraulic hinges. Either way, as the vessel dredges, excess water in the dredged materials is spilled off as the heavier solids settle to the bottom of the hopper. This excess water is returned to the sea to reduce weight and increase the amount of solid material (or slurry) that can be carried in one load. When

5917-425: The end of September, the electronic music festival Marsatac takes place. In October, the Fiesta des Suds offers many concerts of world music. Marseille is also well known in France for its hip hop music . Bands like IAM originated from Marseille. Other known groups include Fonky Family , Psy 4 de la Rime (including rappers Soprano and Alonzo ), and Keny Arkana . In a slightly different way, ragga music

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6014-438: The end of the 18th century and until the late 1970s, the Opéra . Located near the Old Port and the Canebière, at the very heart of the city, its architectural style was comparable to the classical trend found in other opera houses built at the same time in Lyon and Bordeaux . In 1919, a fire almost completely destroyed the house, leaving only the stone colonnade and peristyle from the original façade. The classical façade

6111-430: The environment, including the following: The nature of dredging operations and possible environmental impacts requires that the activity often be closely regulated and requires comprehensive regional environmental impact assessments alongside continuous monitoring. For example, in the U.S., the Clean Water Act requires that any discharge of dredged or fill materials into "waters of the United States," including wetlands,

6208-428: The forces of Charles Martel against the Umayyad Arabs . It became part of the County of Provence during the tenth century, although its renewed prosperity was curtailed by the Black Death of the 14th century and a sack of the city by the Crown of Aragon in 1423. The city's fortunes rebounded with the ambitious building projects of René of Anjou , Count of Provence, who strengthened the city's fortifications during

6305-424: The form of a scoop made of chain mesh, and are towed by a fishing boat . Clam-specific dredges can utilize hydraulic injection to target deeper into the sand. Dredging can be destructive to the seabed and some scallop dredging has been replaced by collecting via scuba diving . As of June 2018, the largest dredger in Asia is MV  Tian Kun Hao , a 140-metre (460 ft) long dredger constructed in China, with

6402-447: The hopper is filled with slurry , the dredger stops dredging and goes to a dump site and empties its hopper. Some hopper dredges are designed so they can also be emptied from above using pumps if dump sites are unavailable or if the dredge material is contaminated. Sometimes the slurry of dredgings and water is pumped straight into pipes which deposit it on nearby land. These pipes are also commonly known as dredge hoses , too. There are

6499-463: The independence of Algeria in 1962). A quarter of the immigrants living in the Marseille metropolitan area were born in Europe (half of them in Italy, Portugal, and Spain), 46% were born in the Maghreb (almost two-third of them in Algeria), 14% in the rest of Africa (almost half of them in the Indian Ocean islands of Comoros , Madagascar , and Mauritius , not counting those born in Réunion and Mayotte who are not legally immigrants), and 15.0% in

6596-589: The local daily newspaper ; RTM, Marseille's public transport company; and Société Nationale Maritime Corse Méditerranée (SNCM), a major provider of passenger, vehicle and freight transportation in the Western Mediterranean. The urban operation Euroméditerranée has developed a large offer of offices and thus Marseille hosts one of the main business district in France. Marseille is the home of three main technopoles : Château-Gombert (technological innovations), Luminy (biotechnology) and La Belle de Mai (17,000 sq.m. of offices dedicated to multimedia activities). The port

6693-469: The material could well suit the building industry, or could be used for beach nourishment. Dredging can disturb aquatic ecosystems , often with adverse impacts. In addition, dredge spoils may contain toxic chemicals that may have an adverse effect on the disposal area; furthermore, the process of dredging often dislodges chemicals residing in benthic substrates and injects them into the water column . Dredging can have numerous significant impacts on

6790-403: The material through doors in the hull or pumps the material out of the hoppers. Some dredges also self-offload using drag buckets and conveyors. As of 2008 the largest trailing suction hopper dredgers in the world were Jan De Nul 's Cristobal Colon (launched 4 July 2008 ) and her sister ship Leiv Eriksson (launched 4 September 2009 ). Main design specifications for the Cristobal Colon and

6887-459: The mid-15th century. During the 16th century, the city hosted a naval fleet with the combined forces of the Franco-Ottoman alliance , which threatened the ports and navies of the Genoese Republic . Marseille lost a significant portion of its population during the Great Plague of Marseille in 1720, but the population had recovered by mid-century. In 1792, the city became a focal point of the French Revolution , and though France's national anthem

6984-467: The most powerful cutter-suction dredger in the world is DEME 's Spartacus , which entered service in 2021. The auger dredge system functions like a cutter suction dredger, but the cutting tool is a rotating Archimedean screw set at right angles to the suction pipe. Mud Cat invented the auger dredge in the 1970s. These use the Venturi effect of a concentrated high-speed stream of water to pull

7081-426: The nearby water, together with bed material, into a pipe. An airlift is a type of small suction dredge. It is sometimes used like other dredges. At other times, an airlift is handheld underwater by a diver . It works by blowing air into the pipe, and that air, being lighter than water, rises inside the pipe, dragging water with it. Some bucket dredgers and grab dredgers are powerful enough to rip out coral to make

7178-579: The north. Farther out in the Bay of Marseille is the Frioul archipelago which comprises four islands, one of which, If, is the location of Château d'If , made famous by the Dumas novel The Count of Monte Cristo . The main commercial centre of the city intersects with the Canebière at Rue St Ferréol and the Centre Bourse (one of the city's main shopping malls). The centre of Marseille has several pedestrianised zones, most notably Rue St Ferréol, Cours Julien near

7275-546: The people of Marseille, a Romano-Byzantine church and the symbol of the city. Inherited from this past, the Grand Port Maritime de Marseille (GPMM) and the maritime economy are major poles of regional and national activity and Marseille remains the first French port, the second Mediterranean port and the fifth European port. Since its origins, Marseille's openness to the Mediterranean Sea has made it

7372-512: The poorest remained. For a while, the mafia appeared to run the city, and for a period of time the communist party was prominent. Multi-cultural Marseille can be observed by a visitor at the market at Noailles, also called Marché des Capucins, in old town near the Old Port. There, Lebanese bakeries, an African spice market, Chinese and Vietnamese groceries, fresh vegetables and fruit, shops selling couscous, shops selling Caribbean food are side by side with stalls selling shoes and clothing from around

7469-588: The preeminent Greek polis in the Hellenized region of southern Gaul . The city-state sided with the Roman Republic against Carthage during the Second Punic War (218–201 BC), retaining its independence and commercial empire throughout the western Mediterranean even as Rome expanded its empire into Western Europe and North Africa . However, the city lost its independence following

7566-667: The production of concretes and construction block, although the high organic content (in many cases) of this material is a hindrance toward such ends. The proper management of contaminated sediments is a modern-day issue of significant concern. Because of a variety of maintenance activities, thousands of tonnes of contaminated sediment are dredged worldwide from commercial ports and other aquatic areas at high level of industrialization. Dredged material can be reused after appropriate decontamination. A variety of processes has been proposed and tested at different scales of application ( technologies for environmental remediation ). Once decontaminated,

7663-451: The regional economy. 100 million tons of freight pass annually through the port, 60% of which is petroleum, making it number one in France and the Mediterranean and number three in Europe. However, in the early 2000s, the growth in container traffic was being stifled by the constant strikes and social upheaval. The port is among the 20th firsts in Europe for container traffic with 1,062,408 TEU and new infrastructure has already raised

7760-950: The rest of the world (not counting those born in the French overseas departments of the Americas and in the French territories of the South Pacific, who are not legally immigrants). In 2002, about one third of the population of Marseille can trace their roots back to Italy. Marseille also has the second-largest Corsican and Armenian populations of France. Other significant communities include Maghrebis , Turks , Comorians , Chinese, and Vietnamese . The largest immigrant communities (including descendants) in 2002 were Italians (290,000 Italians, or 33%), then Muslims - mainly Maghrebis (200,000 Muslims, or 23%), then Corsicans (100,000 Corsicans, or 11.5%), then Armenians (80,000 Armenians, or 9%). In 1999, in several arrondissements, about 40% of

7857-453: The rest of the world brought several other waves of immigrants during the 20th century: Greeks and Italians started arriving at the end of the 19th century and in the first half of the 20th century, up to 40% of the city's population was of Italian origin; Russians in 1917; Armenians in 1915 and 1923; Vietnamese in the 1920s, 1954 and after 1975; Corsicans during the 1920s and 1930s; Spanish after 1936; Maghrebis (both Arab and Berber ) in

7954-479: The seabed to bring the sediment in suspension, which then becomes a turbidity current , which flows away down slope, is moved by a second burst of water from the WID or is carried away in natural currents. Water injection results in a lot of sediment in the water which makes measurement with most hydrographic equipment (for instance: singlebeam echosounders) difficult. These dredgers use a chamber with inlets, out of which

8051-469: The seabed with its hull out of the water. Some forms can go on land. Some of these are land-type backhoe excavators whose wheels are on long hinged legs so it can drive into shallow water and keep its cab out of water. Some of these may not have a floatable hull and, if so, cannot work in deep water. Oliver Evans (1755–1819) in 1804 invented the Oruktor Amphibolos, an amphibious dredger which

8148-404: The sector councils and one third in the city council. The 9th arrondissement of Marseille is the largest in terms of area because it comprises parts of Calanques National Park . With a population of 89,316 (2007), the 13th arrondissement of Marseille is the most populous one. From 1950 to the mid-1990s, Marseille was a Socialist (PS) and Communist (PCF) stronghold. Gaston Defferre (PS)

8245-628: The sediment. These environmental impacts can reduce marine wildlife populations in some cases, contaminate sources of drinking water and interrupt economic activities such as fishing. Dredging is excavation carried out underwater or partially underwater, in shallow waters or ocean waters . It keeps waterways and ports navigable, and assists coastal protection, land reclamation and coastal redevelopment, by gathering up bottom sediments and transporting it elsewhere. Dredging can be done to recover materials of commercial value; these may be high value minerals or sediments such as sand and gravel that are used by

8342-400: The south of France with high concentration of museums, cinemas, theatres, clubs, bars, restaurants, fashion shops, hotels, and art galleries . Unemployment in the economy fell from 20% in 1995 to 14% in 2004. However, Marseille unemployment rate remains higher than the national average. In some parts of Marseille, youth unemployment is reported to be as high as 40%. The city of Marseille

8439-427: The water is pumped with the inlets closed. It is usually suspended from a crane on land or from a small pontoon or barge. Its effectiveness depends on depth pressure. A snagboat is designed to remove big debris such as dead trees and parts of trees from North America waterways. Some of these are any of the above types of dredger, which can operate normally, or by extending legs, also known as spuds, so it stands on

8536-705: The world are currently the Vitruvius, the Mimar Sinan, Postnik Yakovlev (Jan De Nul), the Samson (DEME), the Simson and the Goliath (Van Oord). They featured barge -mounted excavators. Small backhoe dredgers can be track-mounted and work from the bank of ditches. A backhoe dredger is equipped with a half-open shell. The shell is filled moving towards the machine. Usually dredged material is loaded in barges. This machine

8633-435: The young people under 18 were of Maghrebi origin (at least one immigrant parent). Since 2013 a significant number of Central- and Eastern European immigrants have settled in Marseille, attracted by better job opportunities and the good climate of this Mediterranean city. The main nationalities of the immigrants are Romanian and Polish. According to data from 2010, major religious communities in Marseille include: Marseille

8730-446: Was America's first steam-powered road vehicle. These are usually used to recover useful materials from the seabed. Many of them travel on continuous track . A unique variant is intended to walk on legs on the seabed. Fishing dredges are used to collect various species of clams , scallops , oysters or mussels from the seabed. Some dredges are also designed to catch crabs, sea urchins, sea cucumbers, and conch. These dredges have

8827-468: Was a flat-bottomed boat with spikes sticking out of its bottom. As tide current pulled the boat, the spikes scraped seabed material loose, and the tide current washed the material away, hopefully to deeper water. Krabbelaar is the Dutch word for "scratcher". A water injection dredger uses a small jet to inject water under low pressure (to prevent the sediment from exploding into the surrounding waters) into

8924-686: Was born in Strasbourg , it was first sung in Paris by volunteers from Marseille, hence the name the crowd gave it: La Marseillaise . The Industrial Revolution and establishment of the Second French colonial empire during the 19th century allowed for the further expansion of the city, although it was occupied by the German Wehrmacht in November 1942 and subsequently heavily damaged during World War II . The city has since become

9021-535: Was called Tarot italien (Italian Tarot) and even earlier it was simply called Tarot. Before being de Marseille , it was used to play the local variant of tarocchi before it became used in cartomancy at the end of the 18th century, following the trend set by Antoine Court de Gébelin . The name Tarot de Marseille (Marteau used the name ancien Tarot de Marseille ) was used by contrast to other types of Tarots such as Tarot de Besançon ; those names were simply associated with cities where there were many cardmakers in

9118-551: Was consecutively reelected six times as Mayor of Marseille from 1953 until his death in 1986. He was succeeded by Robert Vigouroux of the European Democratic and Social Rally (RDSE). Jean-Claude Gaudin of the conservative UMP was elected Mayor of Marseille in 1995. Gaudin was reelected in 2001, 2008 and 2014. In recent years, the Communist Party has lost most of its strength in the northern boroughs of

9215-790: Was finished in January 2013. The channel was most recently dredged in 2018. 48°24′43″N 122°29′52″W  /  48.41194°N 122.49778°W  / 48.41194; -122.49778 This Skagit County, Washington state location article is a stub . You can help Misplaced Pages by expanding it . Dredging Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features ; reshaping land and water features to alter drainage , navigability , and commercial use; constructing dams , dikes , and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but

9312-465: Was granted to them by Shah Abbas of Iran, the trade flow of Armenians of Marseille increased tremendously. Merchants of Armenian origin received trade privileges in France by Armand Jean du Plessis de Richelieu (1585–1642) and later on Jean-Baptiste Colbert (1619–1683) Marseille a free port in 1669. One notable Armenian-Iranian merchant gained a patent from Louis XIV (1638–1715) over Iranian silk. Armenians also became successful money-lenders and bankers in

9409-557: Was restored and the opera house reconstructed in a predominantly Art Deco style, as the result of a major competition. Currently the Opéra de Marseille stages six or seven operas each year. Since 1972, the Ballet national de Marseille has performed at the opera house; its director from its foundation to 1998 was Roland Petit . There are several popular festivals in different neighborhoods, with concerts, animations, and outdoor bars, like

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