| dbo:abstract |
The National Geodetic Vertical Datum of 1929 is the official name since 1973 of the vertical datum established for vertical control surveying in the United States of America by the General Adjustment of 1929. Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the National Geodetic Survey and used to measure the elevation of a point above and depression below mean sea level (MSL). NGVD29 was superseded by the North American Vertical Datum of 1988 (NAVD 88), based upon reference to a single benchmark (referenced to the new International Great Lakes Datum of 1985 local mean sea level height value), although many cities and U.S. Army Corps of Engineers "legacy" projects with established data continued to use the older datum. (en) O Datum Vertical Geodésico Nacional de 1929 é, desde 1973, o dado vertical estabelecido para levantamento de controle vertical nos Estados Unidos da América pelo Ajuste Geral de 1929. Originalmente conhecido como Datum do nível do mar de 1929, o NGVD 29 foi determinado e publicado pelo National Geodetic Survey e usado para medir a elevação de um ponto acima e a depressão abaixo do nível médio do mar (MSL). O NGVD29 foi substituído pelo Datum Vertical da América do Norte de 1988 ( NAVD 88 ), base na referência a uma única referência (referenciada no novo Datum Internacional dos Grandes Lagos de 1985, valor médio da altura do nível do mar local), embora muitas cidades e EUA Os projetos do Army Corps of Engineers com dados estabelecidos continuaram usando o dado mais antigo. (pt) 1929年海平面基準（英語：Sea Level Datum of 1929），或官方名稱1929年國家大地垂直基準（英語：National Geodetic Vertical Datum of 1929、NGVD29）是由確定並發布用於測量高於點海拔和低於窪地的。 海平面基準其後被（英語：North American Vertical Datum of 1988、NAVD88）取代。 (zh) |
| dbo:wikiPageExternalLink |
http://www.ngs.noaa.gov/ http://www.ngs.noaa.gov/CORS-Proxy/Glossary/xml/NGS_Glossary.xml http://www.ngs.noaa.gov/cgi-bin/VERTCON/vert_con.prl http://www.usgs.gov/ |
| dbo:wikiPageID |
12103375 (xsd:integer) |
| dbo:wikiPageLength |
3770 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID |
1069268399 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Canada dbc:Vertical_datums dbr:Elevation dbr:U.S._National_Geodetic_Survey dbc:1929_in_the_United_States dbr:United_States dbr:Depression_(geology) dbr:Levelling dbr:North_American_Vertical_Datum_of_1988 dbr:Geodesy dbr:Geodetic_datum dbr:Geoid dbr:NOAA dbr:Equipotential dbc:Topography dbc:Surveying_of_the_United_States dbr:Altitude dbr:Adjustment_of_observations dbr:Surveying dbr:Topography dbr:Reference_ellipsoid dbr:Mean_sea_level dbr:Vertical_datum dbr:U.S._Army_Corps_of_Engineers dbr:NAVD_88 dbr:National_Geodetic_Survey dbr:File:Forecasting_and_Modeling_Storm_Surge.pdf |
| dbp:wikiPageUsesTemplate |
dbt:Geodesy dbt:Cite_web dbt:Reflist dbt:Short_description |
| dct:subject |
dbc:Vertical_datums dbc:1929_in_the_United_States dbc:Topography dbc:Surveying_of_the_United_States |
| rdfs:comment |
1929年海平面基準（英語：Sea Level Datum of 1929），或官方名稱1929年國家大地垂直基準（英語：National Geodetic Vertical Datum of 1929、NGVD29）是由確定並發布用於測量高於點海拔和低於窪地的。 海平面基準其後被（英語：North American Vertical Datum of 1988、NAVD88）取代。 (zh) The National Geodetic Vertical Datum of 1929 is the official name since 1973 of the vertical datum established for vertical control surveying in the United States of America by the General Adjustment of 1929. Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the National Geodetic Survey and used to measure the elevation of a point above and depression below mean sea level (MSL). (en) O Datum Vertical Geodésico Nacional de 1929 é, desde 1973, o dado vertical estabelecido para levantamento de controle vertical nos Estados Unidos da América pelo Ajuste Geral de 1929. Originalmente conhecido como Datum do nível do mar de 1929, o NGVD 29 foi determinado e publicado pelo National Geodetic Survey e usado para medir a elevação de um ponto acima e a depressão abaixo do nível médio do mar (MSL). (pt) |
| rdfs:label |
National Geodetic Vertical Datum of 1929 (en) National Geodetic Vertical Datum de 1929 (pt) 海平面基准 (zh) |
| owl:sameAs |
wikidata:National Geodetic Vertical Datum of 1929 dbpedia-ms:National Geodetic Vertical Datum of 1929 dbpedia-pt:National Geodetic Vertical Datum of 1929 dbpedia-zh:National Geodetic Vertical Datum of 1929 https://global.dbpedia.org/id/4tSim |
| prov:wasDerivedFrom |
wikipedia-en:National_Geodetic_Vertical_Datum_of_1929?oldid=1069268399&ns=0 |
| foaf:isPrimaryTopicOf |
wikipedia-en:National_Geodetic_Vertical_Datum_of_1929 |
| is dbo:wikiPageRedirects of |
dbr:Sea_Level_Datum_of_1929 dbr:NGVD dbr:NGVD29 dbr:NGVD_29 dbr:NVGD29 |
| is dbo:wikiPageWikiLink of |
dbr:Barker_Reservoir dbr:List_of_California_14,000-foot_summits dbr:List_of_Ultras_of_North_America dbr:List_of_mountain_ranges_of_Colorado dbr:List_of_the_highest_major_summits_of_Colorado dbr:North_American_Vertical_Datum_of_1988 dbr:Meades_Ranch_Triangulation_Station dbr:Storm_surge dbr:Southern_Rocky_Mountains dbr:Sea_Level_Datum_of_1929 dbr:List_of_the_most_prominent_summits_of_Colorado dbr:Vertical_datum dbr:VERTCON dbr:NGVD dbr:NGVD29 dbr:NGVD_29 dbr:NVGD29 |
| is foaf:primaryTopic of |
wikipedia-en:National_Geodetic_Vertical_Datum_of_1929 |