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File:ASTER Richat.jpg

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原始檔案 （3,130 × 2,953 像素，檔案大小：1.84 MB，MIME 類型：image/jpeg）

摘要

描述
English: Richat Structure, Oudane, Mauritania - This prominent circular feature in the Sahara desert of Mauritania has attracted attention since the earliest space missions because it forms a conspicuous bull's-eye in the otherwise rather featureless expanse of the desert. Described by some as looking like an outsized ammonite in the desert, the structure [which has a diameter of almost 50 kilometers (30 miles)] has become a landmark for shuttle crews. Initially interpreted as a meteorite impact structure because of its high degree of circularity, it is now thought to be merely a symmetrical uplift (circular anticline) that has been laid bare by erosion. Paleozoic quartzites form the resistant beds outlining the structure. The image was acquired October 7, 2000, covers an area of 45 x 47 km, and is located at 20.9 degrees north latitude and 11.6 degrees west longitude.
日期 攝於2000年10月7日
來源 https://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat
作者 NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
授權許可
(重用此檔案)		 ”The purpose of NASA's Earth Observatory is to provide a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The focus is on Earth's climate and environmental change. In particular, we hope our site is useful to public media and educators. Any and all materials published on the Earth Observatory are freely available for re-publication or re-use, except where copyright is indicated. We ask that NASA's Earth Observatory be given credit for its original materials.”

授權條款

Public domain 本作品由NASA創作，屬於公有領域。根據NASA的版權政策：“NASA的創作除非另有聲明否則不受版權保護。”（參見：Template:PD-USGov/zh，NASA版權政策或JPL圖像使用政策）
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原始上傳日誌

The original description page was here. All following user names refer to en.wikipedia.
  • 2006-04-05 12:43 Brian0918 3130×2953×8 (1928719 bytes)
  • 2006-04-05 12:34 Brian0918 3130×2953×8 (1518916 bytes) '''Credit(s):''' NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan [http://asterweb.jpl.nasa.gov/ ASTER Science Team] '''Source:''' http://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat ''”The purpose of NASA's Earth Observatory is to provide a fr

說明

添加單行說明來描述出檔案所代表的內容
Richat Structure, Oudane, Mauritania

在此檔案描寫的項目

描繪內容

理查特結構

多媒體型式

image/jpeg

校驗和

02a8c0edbe20debcfdc7b55fbfac6fa2f5d784d6

斷定方法：​SHA-1 中文 (已轉換拼寫)

資料大小

1,928,719 位元組

高度

2,953 像素

寬度

3,130 像素

檔案歷史

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日期/時間縮⁠圖尺寸使用者備⁠註
目前2007年10月26日 (五) 05:32於 2007年10月26日 (五) 05:32 版本的縮圖3,130 × 2,953（1.84 MB）File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description='''Credit(s):''' NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan [http://asterweb.jpl.nasa.gov/ ASTER Science Team] '''Source:''' http://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat ''&#8

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