Daim ntawv qhia 7.5 feeb topographic yog dab tsi?
Daim ntawv qhia 7.5 feeb topographic yog dab tsi?

Video: Daim ntawv qhia 7.5 feeb topographic yog dab tsi?

Video: Daim ntawv qhia 7.5 feeb topographic yog dab tsi?
Video: Daim Ntawv Saum Ntuj | NT one Cover | Hmong song 2022 - Nkauj Hmoob tawm tshiab 2024, Kaum ib hlis
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Ib txwm 7.5 feeb Topographical Map

7.5 feeb hais txog qhov tseeb qhov daim ntawv qhia npog thaj tsam 7 feeb thiab 30 vib nas this ntawm longitude los ntawm 7 feeb thiab 30 vib nas this ntawm latitude. Lub npe ntawm lub daim ntawv qhia yog qhia nyob rau sab xis sab tes xis ces kaum. Hauv lwm lo lus, thiab nti ntawm tus daim ntawv qhia sib npaug 24,000 nti hauv daim teb

Ua li no, nws txhais li cas los ua 7.5 feeb topo daim ntawv qhia?

Koj tuaj yeem pom cov kab lus " 7.5 feeb Topo Quad ", " 7.5 feeb Quad Map "los yog qee zaum tsuas yog" npo map "los yog" tob quad "thaum loj yog nkag siab tias yog 7,5 nqi . Cov 7.5 feeb quad maps uas koj yog kawm npog 7.5 los ntawm 7,5 nqi Nyob rau saum npoo ntawm lub ntiaj teb siv lub latitude thiab longitude coordinate system.

Ib yam li ntawd, 7.5 MAP tau txais nws lub npe li cas? Ib "quadrangle" yog Tebchaws Asmeskas Geological Survey (USGS) 7.5 - feeb daim ntawv qhia , qho yog feem ntau muaj npe tom qab lub zos physiographic feature. Cov shorthand "quad" yog kuj siv, tshwj xeeb nrog lub npe ntawm daim ntawv qhia ; piv txwv li, " tus Ranger Creek, Texas quad daim ntawv qhia ".

Cov lus nug tseem yog, daim ntawv qhia 7.5 feeb yog dab tsi?

Feem ntau USGS daim ntawv qhia series faib teb chaws As Mes Lis Kas ua quadrangles bounded los ntawm ob kab latitude thiab ob kab ntawm longitude. Piv txwv li, a 7.5 - feeb map qhia ib cheeb tsam uas spans 7,5 nqi ntawm latitude thiab 7,5 nqi ntawm longitude, thiab nws yog feem ntau muaj npe tom qab qhov tseem ceeb tshaj plaws nyob rau hauv lub quadrangle.

Daim ntawv qhia 7.5 feeb loj npaum li cas?

USGS daim ntawv qhia loj tshaj plaws yog 1: 24, 000-scale ( 1 nti sawv cev 2, 000 ko taw, lossis 1 centimeter = 240 meters) daim duab qhia chaw saum toj kawg nkaus, tseem hu ua 7.5-feeb quadrangles. Plaub nplooj ntawv 7.5-feeb hloov ib daim ntawv 15-feeb qhia txog tib thaj chaw. Txhua daim ntawv yog 22 "x 27" loj thiab npog 49-70 square mais.

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