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40-1160: Coordinates : 7°23′49″N 99°19′48″E / 7.397°N 99.33°E / 7.397; 99.33 (Redirected from Hat Chao Mai Marine National Park ) Marine protected area in Trang Province, Thailand Hat Chao Mai National Park IUCN category II ( national park ) [REDACTED] [REDACTED] [REDACTED] Map of Thailand Location Sikao and Kantang Districts , Trang Province , Thailand Coordinates 7°23′49″N 99°19′48″E / 7.397°N 99.33°E / 7.397; 99.33 Area 231 km (89 sq mi) Established 1981 Visitors 83,023 (in 2019) Governing body Department of National Parks, Wildlife and Plant Conservation Ramsar Wetland Official name Had Chao Mai Marine National Park - Ta Libong Island Non-Hunting Area - Trang River Estuaries Designated 14 August 2002 Reference no. 1182 Hat Chao Mai National Park
80-543: A prime meridian at the westernmost known land, designated the Fortunate Isles , off the coast of western Africa around the Canary or Cape Verde Islands , and measured north or south of the island of Rhodes off Asia Minor . Ptolemy credited him with the full adoption of longitude and latitude, rather than measuring latitude in terms of the length of the midsummer day. Ptolemy's 2nd-century Geography used
120-679: A little before 1300; the text was translated into Latin at Florence by Jacopo d'Angelo around 1407. In 1884, the United States hosted the International Meridian Conference , attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich , England as the zero-reference line. The Dominican Republic voted against
160-416: A location often facetiously called Null Island . In order to use the theoretical definitions of latitude, longitude, and height to precisely measure actual locations on the physical earth, a geodetic datum must be used. A horizonal datum is used to precisely measure latitude and longitude, while a vertical datum is used to measure elevation or altitude. Both types of datum bind a mathematical model of
200-538: A longitudinal degree is 111.3 km. At 30° a longitudinal second is 26.76 m, at Greenwich (51°28′38″N) 19.22 m, and at 60° it is 15.42 m. On the WGS 84 spheroid, the length in meters of a degree of latitude at latitude ϕ (that is, the number of meters you would have to travel along a north–south line to move 1 degree in latitude, when at latitude ϕ ), is about The returned measure of meters per degree latitude varies continuously with latitude. Similarly,
240-700: A national cartographical organization include the North American Datum , the European ED50 , and the British OSGB36 . Given a location, the datum provides the latitude ϕ {\displaystyle \phi } and longitude λ {\displaystyle \lambda } . In the United Kingdom there are three common latitude, longitude, and height systems in use. WGS 84 differs at Greenwich from
280-754: A significant population of large green-pigeons . [REDACTED] Ko Muk [REDACTED] Beach at Ko Kradan See also [ edit ] List of national parks of Thailand List of Protected Areas Regional Offices of Thailand References [ edit ] ^ "Had Chao Mai Marine National Park" . protectedplanet.net . Archived from the original on 2013-10-17 . Retrieved 2012-11-26 . ^ "Had Chao Mai Marine National Park - Ta Libong Island Non-Hunting Area - Trang River Estuaries" . Ramsar Sites Information Service . Retrieved 16 July 2019 . ^ "Hat Chao Mai National Park Trang Province" . Thailand's World - South Thailand Parks . Asia's World. Archived from
320-872: A simple translation may be sufficient. Datums may be global, meaning that they represent the whole Earth, or they may be local, meaning that they represent an ellipsoid best-fit to only a portion of the Earth. Examples of global datums include World Geodetic System (WGS 84, also known as EPSG:4326 ), the default datum used for the Global Positioning System , and the International Terrestrial Reference System and Frame (ITRF), used for estimating continental drift and crustal deformation . The distance to Earth's center can be used both for very deep positions and for positions in space. Local datums chosen by
360-503: A year, or 10 m in a century. A weather system high-pressure area can cause a sinking of 5 mm . Scandinavia is rising by 1 cm a year as a result of the melting of the ice sheets of the last ice age , but neighboring Scotland is rising by only 0.2 cm . These changes are insignificant if a local datum is used, but are statistically significant if a global datum is used. On the GRS 80 or WGS 84 spheroid at sea level at
400-586: Is where Earth's equatorial radius a {\displaystyle a} equals 6,378,137 m and tan β = b a tan ϕ {\displaystyle \textstyle {\tan \beta ={\frac {b}{a}}\tan \phi }\,\!} ; for the GRS 80 and WGS 84 spheroids, b a = 0.99664719 {\textstyle {\tfrac {b}{a}}=0.99664719} . ( β {\displaystyle \textstyle {\beta }\,\!}
440-511: Is a protected area located in the Sikao and Kantang Districts of Trang Province , Thailand . It is a marine national park. Established in 1981, it is an IUCN Category II protected area with coral reefs , and an area measuring 144,292 rai ~ 231 square kilometres (89 sq mi). The park has been designated as a Ramsar site since 2002. It has also been designated an Important Bird Area (IBA) by BirdLife International because it supports
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#1732780257670480-418: Is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude . It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system , the geographic coordinate system
520-737: Is an international treaty for the conservation and sustainable use of Ramsar sites ( wetlands ). It is also known as the Convention on Wetlands . It is named after the city of Ramsar in Iran , where the convention was signed in 1971. Every three years, representatives of the contracting parties meet as the Conference of the Contracting Parties (COP), the policy-making organ of the convention which adopts decisions (site designations, resolutions and recommendations) to administer
560-797: Is known as the reduced (or parametric) latitude ). Aside from rounding, this is the exact distance along a parallel of latitude; getting the distance along the shortest route will be more work, but those two distances are always within 0.6 m of each other if the two points are one degree of longitude apart. Like any series of multiple-digit numbers, latitude-longitude pairs can be challenging to communicate and remember. Therefore, alternative schemes have been developed for encoding GCS coordinates into alphanumeric strings or words: These are not distinct coordinate systems, only alternative methods for expressing latitude and longitude measurements. Ramsar Convention The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat
600-544: Is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in the EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid ), as different datums will yield different latitude and longitude values for the same location. The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene , who composed his now-lost Geography at
640-753: Is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses (often called great circles ), which converge at the North and South Poles. The meridian of the British Royal Observatory in Greenwich , in southeast London, England, is the international prime meridian , although some organizations—such as the French Institut national de l'information géographique et forestière —continue to use other meridians for internal purposes. The prime meridian determines
680-405: Is ultimately calculated from latitude and longitude, it is crucial that they clearly state the datum on which they are based. For example, a UTM coordinate based on WGS84 will be different than a UTM coordinate based on NAD27 for the same location. Converting coordinates from one datum to another requires a datum transformation such as a Helmert transformation , although in certain situations
720-494: The Library of Alexandria in the 3rd century BC. A century later, Hipparchus of Nicaea improved on this system by determining latitude from stellar measurements rather than solar altitude and determining longitude by timings of lunar eclipses , rather than dead reckoning . In the 1st or 2nd century, Marinus of Tyre compiled an extensive gazetteer and mathematically plotted world map using coordinates measured east from
760-4475: The 133 Government Gazettes]. Department of National Parks, Wildlife and Plant Conservation (in Thai). December 2020 . Retrieved 1 November 2022 , no 36 {{ cite web }} : CS1 maint: postscript ( link ) ^ Spalding, Mark; Ravilious, Corinna; Green, Edmund Peter (2001). World atlas of coral reefs . University of California Press. pp. 265–. ISBN 978-0-520-23255-6 . Retrieved October 1, 2011 . ^ "Hat Chao Mai" . BirdLife Data Zone . BirdLife International. 2024 . Retrieved 2024-10-14 . v t e National parks, forest parks and wetlands in Thailand National parks Budo–Su-ngai Padi Chae Son Chaloem Rattanakosin Doi Inthanon Doi Khun Tan Doi Luang Doi Pha Hom Pok Doi Phu Kha Doi Phu Nang Doi Suthep–Pui Erawan Hat Khanom–Mu Ko Thale Tai Huai Nam Dang Kaeng Krachan Kaeng Krung Kaeng Tana Khao Khitchakut Khao Kho Khao Laem Khao Lak–Lam Ru Khao Lampi–Hat Thai Mueang Khao Luang Khao Phanom Bencha Khao Phra Wihan Khao Sok Khao Yai Khlong Lan Khao Nam Khang Khlong Phanom Khlong Wang Chao Khuean Srinagarindra Khun Chae Khun Khan Khun Nan Khun Phawo Kui Buri Khwae Noi Lam Nam Kok Lam Nam Nan Lan Sang Mae Charim Mae Ping Mae Wa Mae Wang Mae Wong Mae Yom Nam Nao Nam Phong Namtok Chat Trakan Namtok Chet Sao Noi Namtok Huai Yang Namtok Mae Surin Namtok Phlio Namtok Sam Lan Op Khan Op Luang Pa Hin Ngam Pang Sida Pha Daeng Pha Taem Phu Chong–Na Yoi Phu Hin Rong Kla Phu Kao–Phu Phan Kham Phu Kradueng Phu Laen Kha Phu Pha Man Phu Phan Phu Pha Thoep Phu Pha Yon Phu Ruea Phu Sa Dok Bua Phu Sang Phu Soi Dao Phu Toei Phu Wiang Ramkhamhaeng Sai Thong Sai Yok Salawin Si Lanna Si Nan Si Phang Nga Si Satchanalai Sirinat Ta Phraya Tai Romyen Taksin Maharat Tat Mok Tat Ton Thale Ban Tham Pla–Namtok Pha Suea Than Sadet–Ko Pha-ngan Thap Lan Thong Pha Phum Thung Salaeng Luang Ton Sak Yai Wiang Kosai Marine national parks Ao Phang Nga Phang Nga Bay Hat Chao Mai Hat Noppharat Thara–Mu Ko Phi Phi Hat Wanakon Khao Laem Ya–Mu Ko Samet Khao Sam Roi Yot Laem Son Mu Ko Ang Thong Mu Ko Chang Mu Ko Lanta Mu Ko Phetra Mu Ko Similan Mu Ko Surin Tarutao Forest parks Khao Kradong Phae Mueang Phi Phu Chi Fa Phu Langka Phu Phra Bat Buabok Pran Buri Sa Nang Manora Wetlands Bueng Boraphet Don Hoi Lot Krabi River Estuary Kraburi River Estuary Phayao Lake Phru To Daeng Kuan Ki Sian of
800-694: The COP between its triennial meetings, within the framework of the decisions made by the COP. The contracting parties that are members of the Standing Committee are elected by each meeting of the COP to serve for the three years. The Scientific and Technical Review Panel (STRP) provides scientific and technical guidance to the Conference of Contracting Parties, the Standing Committee, and the Ramsar Secretariat. The Secretariat carries out
840-512: The Equator, one latitudinal second measures 30.715 m , one latitudinal minute is 1843 m and one latitudinal degree is 110.6 km. The circles of longitude, meridians, meet at the geographical poles, with the west–east width of a second naturally decreasing as latitude increases. On the Equator at sea level, one longitudinal second measures 30.92 m, a longitudinal minute is 1855 m and
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#1732780257670880-3459: The Thale Noi Non-hunting Area v t e ASEAN Heritage Parks Brunei (1) Tasek Merimbun Heritage Park Cambodia (2) Preah Monivong National Park Virachey National Park Indonesia (7) Gunung Leuser National Park Kerinci Seblat National Park Lorentz National Park Way Kambas National Park Kepulauan Seribu National Park Wakatobi National Park Bantimurung – Bulusaraung National Park Laos (1) Nam Ha National Protected Area Malaysia (3) Gunung Mulu National Park Kinabalu National Park Taman Negara National Park Myanmar (8) Alaungdaw Kathapa National Park Htamanthi Wildlife Sanctuary Indawgyi Lake Wildlife Sanctuary Inlay Lake Wetland Sanctuary Khakaborazi National Park Lampi Island Marine National Park Meinmahla Kyun Wildlife Sanctuary Natmataung National Park Philippines (9) Mount Apo Natural Park Mount Hamiguitan Range Wildlife Sanctuary Mounts Iglit–Baco National Park Mount Kitanglad Range Natural Park Mount Makiling Nature Reserve Mount Malindang Range Natural Park Timpoong and Hibok-Hibok Natural Monument Tubbataha Reefs Natural Park Agusan Marsh Wildlife Sanctuary Singapore (2) Bukit Timah Nature Reserve Sungei Buloh Wetland Reserve Thailand (7) Ao Phang Nga National Park , Surin Islands and Similan Islands Kaeng Krachan National Park Khao Yai National Park Khao Sok National Park Tarutao National Park Hat Chao Mai National Park and Mu Ko Libong islands Mu Ko Ang Thong National Park Vietnam (10) Ba Bể National Park Bái Tử Long National Park Chư Mom Ray National Park Hoàng Liên National Park Kon Ka Kinh National Park U Minh Thượng National Park Bidoup Núi Bà National Park Vu Quang National Park Lò Gò-Xa Mát National Park Ngọc Linh (Kon Tum) Nature Reserve Association of Southeast Asian Nations Centre for Biodiversity Retrieved from " https://en.wikipedia.org/w/index.php?title=Hat_Chao_Mai_National_Park&oldid=1251026746 " Categories : IUCN Category II National parks of Thailand Important Bird Areas of Thailand Protected areas established in 1981 1981 establishments in Thailand Geography of Trang province Tourist attractions in Trang province Marine protected areas of Thailand Ramsar sites in Thailand Hidden categories: Pages using gadget WikiMiniAtlas CS1 maint: postscript CS1 Thai-language sources (th) All articles with dead external links Articles with dead external links from July 2024 Articles with permanently dead external links Articles with short description Short description matches Wikidata Coordinates on Wikidata Geographic coordinate system A geographic coordinate system ( GCS )
920-753: The day-to-day coordination of the convention's activities. It is based at the headquarters of the International Union for Conservation of Nature (IUCN) in Gland, Switzerland. The implementation of the Ramsar Convention is a continuing partnership between the Conference of Contracting Parties, the Standing Committee, and the Secretariat, with the advice of the subsidiary expert body, the Scientific and Technical Review Panel (STRP), and
960-464: The far western Aleutian Islands . The combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The visual grid on a map formed by lines of latitude and longitude is known as a graticule . The origin/zero point of this system is located in the Gulf of Guinea about 625 km (390 mi) south of Tema , Ghana ,
1000-624: The largest surface area of listed wetland is Bolivia, with around 148,000 square kilometres (57,000 sq mi). The Ramsar Sites Information Service (RSIS) is a searchable database which provides information on each Ramsar site. As of 2016 there are 18 transboundary Ramsar sites, and 15 Ramsar regional initiatives covering regions of the Mediterranean, Asia, Africa, and South America. The Ramsar Convention works closely with six other organisations known as international organization partners (IOPs). These are: These organizations support
1040-415: The length in meters of a degree of longitude can be calculated as (Those coefficients can be improved, but as they stand the distance they give is correct within a centimeter.) The formulae both return units of meters per degree. An alternative method to estimate the length of a longitudinal degree at latitude ϕ {\displaystyle \phi } is to assume a spherical Earth (to get
1080-481: The motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911. The latitude ϕ of a point on Earth's surface is the angle between the equatorial plane and the straight line that passes through that point and through (or close to) the center of the Earth. Lines joining points of the same latitude trace circles on
1120-523: The one used on published maps OSGB36 by approximately 112 m. The military system ED50 , used by NATO , differs from about 120 m to 180 m. Points on the Earth's surface move relative to each other due to continental plate motion, subsidence, and diurnal Earth tidal movement caused by the Moon and the Sun. This daily movement can be as much as a meter. Continental movement can be up to 10 cm
1160-512: The original on 5 March 2016 . Retrieved 1 November 2012 . ^ Braatz, Susan M. (November 1992). Conserving biological diversity: a strategy for protected areas in the Asia-Pacific region . World Bank Publications. pp. 57 –. ISBN 978-0-8213-2307-6 . Retrieved October 1, 2011 . ^ "ข้อมูลพื้นที่อุทยานแห่งชาติ ที่ประกาศในราชกิจจานุบกษา 133 แห่ง" [National Park Area Information published in
1200-535: The proper Eastern and Western Hemispheres , although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E. This is not to be conflated with the International Date Line , which diverges from it in several places for political and convenience reasons, including between far eastern Russia and
1240-430: The same datum will obtain the same location measurement for the same physical location. However, two different datums will usually yield different location measurements for the same physical location, which may appear to differ by as much as several hundred meters; this not because the location has moved, but because the reference system used to measure it has shifted. Because any spatial reference system or map projection
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1280-664: The same prime meridian but measured latitude from the Equator instead. After their work was translated into Arabic in the 9th century, Al-Khwārizmī 's Book of the Description of the Earth corrected Marinus' and Ptolemy's errors regarding the length of the Mediterranean Sea , causing medieval Arabic cartography to use a prime meridian around 10° east of Ptolemy's line. Mathematical cartography resumed in Europe following Maximus Planudes ' recovery of Ptolemy's text
1320-486: The shape of the earth (usually a reference ellipsoid for a horizontal datum, and a more precise geoid for a vertical datum) to the earth. Traditionally, this binding was created by a network of control points , surveyed locations at which monuments are installed, and were only accurate for a region of the surface of the Earth. Some newer datums are bound to the center of mass of the Earth. This combination of mathematical model and physical binding mean that anyone using
1360-429: The support of the international organization partners (IOPs). Musonda Mumba is the seventh secretary general of the Ramsar Convention on Wetlands. 2 February is World Wetlands Day, marking the convention's adoption on 2 February 1971. Established to raise awareness about the value of wetlands for humanity and the planet, WWD was celebrated for the first time in 1997, and has grown since then. In 2015 World Wetlands Day
1400-464: The surface of Earth called parallels , as they are parallel to the Equator and to each other. The North Pole is 90° N; the South Pole is 90° S. The 0° parallel of latitude is designated the Equator , the fundamental plane of all geographic coordinate systems. The Equator divides the globe into Northern and Southern Hemispheres . The longitude λ of a point on Earth's surface
1440-410: The treaty. This ultimate authority reviews progress under the convention, identifies new priorities, and sets work plans for members. The COP can also make amendments to the convention, create expert advisory bodies, review progress reports by member nations, and collaborate with other international organizations and agreements. The Standing Committee is the intersessional executive body which represents
1480-445: The width per minute and second, divide by 60 and 3600, respectively): where Earth's average meridional radius M r {\displaystyle \textstyle {M_{r}}\,\!} is 6,367,449 m . Since the Earth is an oblate spheroid , not spherical, that result can be off by several tenths of a percent; a better approximation of a longitudinal degree at latitude ϕ {\displaystyle \phi }
1520-546: The work of the convention and improve the way in which the parties are able to implement its objectives. In 2022, COP14 was co-held in Wuhan, China, and Geneva, Switzerland. The list of wetlands of international importance included 2,331 Ramsar sites in May 2018 covering over 2.1 million square kilometres (810,000 sq mi). The countries with most sites are the United Kingdom with 175 and Mexico with 142. The country with
1560-443: The work of the convention by providing expert technical advice, helping implement field studies, and providing financial support. The IOPs also participate regularly as observers in all meetings of the conference of the parties and as full members of the Scientific and Technical Review Panel. The convention collaborates with a network of partners: This is the convention's governing body consisting of all governments that have ratified
1600-747: Was celebrated in 59 countries. The convention was co-founded by Eskandar Firouz (former environment minister of Iran), Luc Hoffmann of Tour du Valat research station in the Camargue in France, and Geoffrey Matthews of the Wildfowl & Wetlands Trust at Slimbridge in the late 1960s. The conference, which adopted the terms of the agreement, was held in the Iranian Caspian Sea resort of Ramsar on 2 February 1971. The convention turned 50 in 2021. Despite its quasi-universal application,
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