NOAA Lub Chaw Haujlwm Saib Xyuas Kev Ncaj Ncees ua kev tshawb fawb hydrographic ntsuas qhov tob thiab hauv qab ntawm cov dej hauv qab. Cov ntaub ntawv ntawd yog siv los hloov kho cov kab kos nautical thiab tsim cov qauv hydrographic. Cov ntaub ntawv no tseem ceeb heev rau kev taug kev hauv hiav txwv thiab peb lub teb chaws txoj kev dej.
Dab tsi yog qhov tseem ceeb ntawm kev soj ntsuam hydrographic?
Hydrographic Surveying- Nws yog ua los ntsuas qhov tob thiab hauv qab teeb tsa ntawm lub cev dej los tsim cov kab kos hauv lub tebchaws los xyuas kom muaj kev nyab xeeb ntawm cov dej hauv dej.
txhais li cas los ntawm kev soj ntsuam hydrographic?
Hydrographic survey is the science of measurement and description of features that impact maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities. … Hydrography yog sau raws li cov cai uas txawv nyob ntawm txoj cai txais.
Dab tsi yog lub ntsiab lus tseem ceeb hauv kev txiav txim siab txog kev tshawb fawb hydrographic?
Yog li txhua qhov kev tshawb fawb hydrographic muaj plaub yam tseem ceeb.
Lub Ntsiab Tseem Ceeb
- Txoj haujlwm. …
- Dej qhov tob, ntsuas los ntawm qhov chaw siv ntsug lossis qhov chaw, xws li txhais tau tias qis dej qis, mus rau hauv hiav txwv.
- Cov yam ntxwv, qee zaum hu ua lub hom phiaj, uas tej zaum yuav muaj kev phom sij rau kev taug kev. …
- Seafloor yam ntxwv.
Yuav ua li cas yog txoj kev tshawb fawb txog dej?
Type of the Hydrographic Survey
- Harbor survey. Daim ntawv ntsuam xyuas no yog npaj rau kev nyab xeeb ntawm cov nkoj nyob ze cov chaw nres nkoj thiab lawv ib puag ncig.
- Kev Tshawb Fawb. …
- Kev Tshawb Fawb Txog Dej Hiav Txwv. …
- Survey rau kho. …
- Control point bathymetric surveying. …
- Differential global positioning system(DGPS)
