Cov txheej txheem:

Stereonet yog dab tsi hauv geology?
Stereonet yog dab tsi hauv geology?

Video: Stereonet yog dab tsi hauv geology?

Video: Stereonet yog dab tsi hauv geology?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
Anonim

A stereonet yog ib daim duab qis hemisphere uas muaj ntau yam geological cov ntaub ntawv tuaj yeem npaj tau. Stereonets yog siv nyob rau hauv ntau yam sib txawv ceg ntawm geology thiab tuaj yeem siv tau ntau txoj hauv kev tshaj li cov uas tau tham ntawm no (saib cov ntaub ntawv siv ntxiv).

Hais txog qhov no, dab tsi yog stereographic projection nyob rau hauv geology?

Cov stereographic projection yog ib txoj kev siv nyob rau hauv structural geology thiab engineering los txheeb xyuas kev taw qhia ntawm kab thiab dav hlau nrog kev hwm rau ib leeg. Lawv yog siv rau kev soj ntsuam ntawm ntau yam ntaub ntawv xws li txaj txaj, dav hlau, pob khawm kab thiab ntau lwm yam qauv.

Ib tug kuj yuav nug, dab tsi yog spherical projection? A kheej kheej projection qhia tau hais tias qhov twg cov kab lossis dav hlau sib tshuam ntawm qhov chaw ntawm ib qho (hemi) kheej kheej , yog tias cov kab / dav hlau kuj dhau los ntawm qhov chaw nruab nrab (hemi) kheej kheej.

Kuj kom paub yog, koj ua li cas thiaj nrhiav tau qhov projection stereographic?

Cov stereographic projection ntawm lub voj voog yog cov ntsiab lus Q uas P = s-1(Q) nyob rau ntawm lub voj voog, yog li peb hloov tus qauv rau P rau hauv qhov sib npaug rau lub voj voog ntawm tus kheej mus rau tau ib qho kev sib npaug rau cov ntsiab lus hauv qhov qhov projection . P = (1/(1+u2 + v2) [2u, 2v, ua2 + v2 - 1] = [x, y, z].

Koj yuav ua li cas rau hauv ib lub sphere?

3 Teb

  1. Sau cov ntsiab lus nyob rau hauv ib qho kev sib koom ua ke nyob rau hauv nruab nrab ntawm tus kheej (x0, y0, z0):
  2. Muab xam qhov ntev ntawm no vector:
  3. Scale lub vector kom nws muaj qhov ntev sib npaug rau lub vojvoog ntawm tus kheej:
  4. Thiab hloov rov qab mus rau koj qhov kev tswj hwm qub kom tau txais qhov projection:

Pom zoo: