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hydrography

n. 水道学,水道测量术

水道学,水道测量术

WordNet (r) 3.0 (2006) (WordNet)

hydrography
n 1: the science of the measurement and description and mapping
of the surface waters of the earth with special reference
to navigation

The Collaborative International Dictionary of English v.0.48 (gcide)

Hydrography \Hy*drog"ra*phy\, n. [Hydro-, 1 -graphy: cf. F.
hydrographie.]
1. The art of measuring and describing the sea, lakes,
rivers, and other waters, with their phenomena.
[1913 Webster]

2. That branch of surveying which embraces the determination
of the contour of the bottom of a harbor or other sheet of
water, the depth of soundings, the position of channels
and shoals, with the construction of charts exhibiting
these particulars.
[1913 Webster]

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英文字典中文字典相关资料:

Hydrography - Wikipedia
Hydrography of streams will include information on the stream bed, flows, water quality and surrounding land Basin or interior hydrography pays special attention to rivers and potable water although if collected data is not for ship navigational uses, and is intended for scientific usage, it is more commonly called hydrometry or hydrology
What is hydrography? - NOAAs National Ocean Service
Hydrography is the science that measures and describes the physical features of the navigable portion of the Earth's surface and adjoining coastal areas Hydrographic surveyors study these bodies of water to see what the "floor" looks like
National Hydrography | U. S. Geological Survey - USGS. gov
The National Hydrography Infrastructure Working Group (NHI WG) is a forum for Federal agencies with direct involvement in the National Hydrography Infrastructure to provide input and collaborate on the direction, development, priorities, management, technologies, use, and resources of the National Hydrography Infrastructure Join Our Community!
Home [www. thsoa. org]
The Hydrographic Society of America (THSOA) is a 501 (c)3 non-profit organization committed to promoting education in hydrography, inshore surveying, inland waters surveying, offshore surveying, positioning and mapping charting, including related earth sciences
Hydrography Program (WASHD) - Washington State Department of Ecology
WASHD National Hydrography The U S Geological Survey's (USGS) National Hydrography Dataset (NHD) has been the federal standard GIS dataset for surface waters of the United States such as rivers, streams, canals, lakes, ponds, and coastlines It has been the Washington state standard since 2011 Now Washington State is transitioning to the USGS’ new elevation-derived replacement of NHD
What is Hydrography ? | IHO
Home What is Hydrography ? What is Hydrography ? Hydrography involves measuring the depth of the water and fixing the position of all the navigational hazards that lie on the seafloor, such as wrecks and rocks This is done mainly with specialised ships and boats operating echo sounders and sonars, but also using survey aircraft fitted with lasers
Hydrography | Definition Facts | Britannica
Hydrography, the art and science of compiling and producing charts, or maps, of water-covered areas of Earth’s surface A brief treatment of hydrography follows For full treatment, see map and surveying: Hydrography The terms hydrography and hydrographer are based on an analogy with geography and
Hydrographic Surveying? What Is It, Methods Importance
Learn what hydrographic surveying is, its methods, and why mapping water depths and coastlines is vital for navigation, engineering, and safety
What Is Hydrography: Measuring Earth’s Water Bodies
Hydrography is the science of measuring and mapping Earth’s water bodies, from ocean depths to river systems, with real impacts on navigation, climate, and ecosystems
USGS National Hydrography Dataset (NHD) - Overview
USGS National Hydrography Dataset (NHD) The USGS National Hydrography Dataset (NHD) service from The National Map is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point

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