跳转到内容

File:Sauerstoffgehalt-1000mj2.png

页面内容不支持其他语言。
這個文件來自維基共享資源
维基百科,自由的百科全书

原始文件 (2,000 × 1,409像素,文件大小:74 KB,MIME类型:image/png


描述
English: This graph represents the concentration of oxygen in the atmosphere over the last 1000 million years. As a reference, the dashed red line shows the present concentration of 21%.

It should be noted that the O2 concentration variation which occurred in past periods can often be estimated only relatively coarsely. Therefore, the chart makes no claim to accuracy, but can only give a broad overview of change at the level of geological periods. This chart is based on the averaged data of several publications. [1][2]

Explanation of the curve:

After having already begun in the Precambrian, the outgassing of oxygen from the oceans caused atmospheric oxygen to jump from 3% to 12% around the beginning of the Cambrian, because by then all oxygen sinks were finally saturated. Around the same time, the Cambrian explosion took place. During the Silurian and Devonian plants spread over the land, while the animal kingdom was still almost exclusively confined to the water. This caused a further rapid and continuous increase of the oxygen concentration. In the following period carbon burial brought the oxygen level to 35%,[3] thus favoring overgrowth especially in insects. Amphibians and early reptiles were now present on land.

Massive volcanic activity at the Permian-Triassic transition caused not only a decline of the oxygen content to 15%, but also the largest mass extinction in geological history. The oxygen concentration then recovered over a long period and reached 26% again by the middle of the Jurassic, and probably even rose to 30% in the Cretaceous. During this time the largest dinosaurs evolved.

The end of the Cretaceous period is marked by an impact event, with climate change and a mass extinction. The oxygen level was only 23% 40 million years ago, and had reached the present value of 21% by 25 million years ago. Since then the level has remained constant, apart from fluctuations in the per thousand range.
  1. Gunnar Ries: Dicke Luft bei den Sauriern
  2. Geologiefznzzrz-Forum @ Geoversum: Massensterben an der Perm-Trias Grenze: Durch Sauerstoffmangel erstickt?
  3. wissenschaft.de: Gigantismus, Fliegen und Antiaging: Sauerstoffreiche Luft löste vor 300 Millionen Jahren einen Innovationsschub aus
Русский: Концентрация кислорода в атмосфере Земли в течение последнего миллиарда лет
日期 (UTC)
来源
作者
其他版本 此文件衍生的作品:  OxygenLevel-1000ma.svg
File:OxygenLevel-1000ma.svg是此文件的矢量版本。 如果此文件质量不低于原点阵图,就应该将这个PNG格式文件替换为此文件。

File:Sauerstoffgehalt-1000mj2.png → File:OxygenLevel-1000ma.svg

更多信息请参阅Help:SVG/zh

其他语言
Alemannisch  Bahasa Indonesia  Bahasa Melayu  British English  català  čeština  dansk  Deutsch  eesti  English  español  Esperanto  euskara  français  Frysk  galego  hrvatski  Ido  italiano  lietuvių  magyar  Nederlands  norsk bokmål  norsk nynorsk  occitan  Plattdüütsch  polski  português  português do Brasil  română  Scots  sicilianu  slovenčina  slovenščina  suomi  svenska  Tiếng Việt  Türkçe  vèneto  Ελληνικά  беларуская (тарашкевіца)  български  македонски  нохчийн  русский  српски / srpski  татарча/tatarça  українська  ქართული  հայերեն  বাংলা  தமிழ்  മലയാളം  ไทย  한국어  日本語  简体中文  繁體中文  עברית  العربية  فارسی  +/−
新SVG图片


这是一张修改过的图片,这意味着它已在原版本的基础上通过软件进行了编辑,改动内容:Translated text to English。其原始版本为:Sauerstoffgehalt-1000mj.svg。修改者:WolfmanSF

我,本作品著作权人,特此采用以下许可协议发表本作品:
Public domain 我,本作品著作权人,释出本作品至公有领域。这适用于全世界。
在一些国家这可能不合法;如果是这样的话,那么:
我无条件地授予任何人以任何目的使用本作品的权利,除非这些条件是法律规定所必需的。

原始上传日志

This image is a derivative work of the following images:

  • File:Sauerstoffgehalt-1000mj.svg licensed with PD-self
    • 2007-10-27T01:17:42Z LordToran 744x524 (41527 Bytes) '
    • 2007-07-23T00:08:15Z LordToran 744x524 (42518 Bytes) == Beschreibung == {{Information |Description=Dieses Diagramm stellt die Sauerstoffkonzentration in der Erdatmosphäre im Lauf der letzten Jahrmilliarde dar. Es ist anzumerken, dass die Zeiträume, in denen vergangene Schwan
    • 2007-07-17T23:57:50Z LordToran 744x524 (41203 Bytes) {{Information |Description=Dieses Diagramm stellt die Sauerstoffkonzentration in der Erdatmosphäre im Lauf der letzten Jahrmilliarde dar. |Source=Selbst erstellt |Date=2007-07-18 |Author=[http://de.wikipedia.org/wiki/Benutze

Uploaded with derivativeFX

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描繪內容

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2010年3月11日 (四) 10:312010年3月11日 (四) 10:31版本的缩略图2,000 × 1,409(74 KB)WolfmanSF{{Information |Description=Dieses Diagramm stellt die Sauerstoffkonzentration in der Erdatmosphäre im Lauf der letzten Jahrmilliarde dar. Als Referenz zeigt die gestrichelte rote Linie die heutige Konzentration von 21% an. Es ist anzumerken, dass die Ze

以下页面使用本文件:

全域文件用途

以下其他wiki使用此文件: