跳至內容

英文维基 | 中文维基 | 日文维基 | 草榴社区

File:Lake Valencia, Venezuela.jpg

頁面內容不支援其他語言。
這個檔案來自維基共享資源
維基百科,自由的百科全書

原始檔案 (1,000 × 656 像素,檔案大小:394 KB,MIME 類型:image/jpeg


摘要

描述

Lake Valencia (Lago de Valencia) is located in north-central Venezuela, and is the largest freshwater lake in the country.

  • The lake was formed approximately 2-3 million years ago due to faulting and subsequent damming of the Valencia River. The lake has been completely dry during several discrete periods of its geologic history. Since 1976 Lake Valencia water levels have risen due to diversion of water from neighboring watersheds—it currently acts as a reservoir for the surrounding urban centers (such as Maracay).
  • The vivid green algal blooms present in this image result from a continual influx of untreated wastewater from the surrounding urban, agricultural, and industrial land uses. This contributes to ongoing eutrophication, contamination, and salinization of the lake. Despite its picturesque location between the Cordillera de la Costa to the north and the Serrania del Interior to the south, Lake Valencia’s poor water quality limits opportunities for tourism and recreational activities.
  • Astronaut photograph ISS010-E-5194 was acquired October 27, 2004 with a Kodak K-760C digital camera with a 180 mm lens and is provided by the ISS Crew Earth Observations experiment and the Image Science & Analysis Group, Johnson Space Center. The International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth.
日期
來源 http://eol.jsc.nasa.gov/EarthObservatory/Lake_Valencia_Venezuela.htm
作者 NASA
本圖像或影音收錄於美國國家航空暨太空總署 (NASA)某部門,其照片編號為: ISS010-E-5194

此標籤不表示文件的著作權狀態。任何文件在附有此標籤的同時還需要一個有效的著作權標籤請參閱許可協議說明頁面以了解更多資訊。
其他語言:

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/zhNASA版權政策JPL圖像使用政策
警告:

說明

添加單行說明來描述出檔案所代表的內容

在此檔案描寫的項目

描繪內容

image/jpeg

攝影器材 繁體中文 (已轉換拼寫)

檔案歷史

點選日期/時間以檢視該時間的檔案版本。

日期/時間縮⁠圖尺寸使用者備⁠註
目前2016年5月8日 (日) 07:00於 2016年5月8日 (日) 07:00 版本的縮圖1,000 × 656(394 KB)SteinsplitterBotBot: Image rotated by 180°
2004年12月24日 (五) 03:52於 2004年12月24日 (五) 03:52 版本的縮圖1,000 × 662(386 KB)Chris 73

下列2個頁面有用到此檔案:

全域檔案使用狀況

以下其他 wiki 使用了這個檔案:

詮釋資料