کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9522666 | 1634961 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling massive sulphate aerosol pollution, following the large 1783 Laki basaltic eruption
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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![عکس صفحه اول مقاله: Modelling massive sulphate aerosol pollution, following the large 1783 Laki basaltic eruption Modelling massive sulphate aerosol pollution, following the large 1783 Laki basaltic eruption](/preview/png/9522666.png)
چکیده انگلیسی
The climatic impact of volcanic eruptions depends mainly on the amount of sulphur-rich gases released into the stratosphere. These are rapidly converted to sulphate aerosols, which result in cooling of the lower troposphere and warming of the lower stratosphere. These gases are retained in the stratosphere and then concentrated by atmospheric processes, forming acid fog near the Earth's surface, with potentially dramatic environmental consequences on plants, animals and humans. We have modelled such emissions in the case of the unusually large 1783-1784 basaltic fissure eruption of Laki (Iceland), using an Atmospheric General Circulation Model. Results show good agreement with historical observations, such as typical time taken by individual pulses to reach continental Europe or geographical extent of the deadly haze that covered much of the northern hemisphere. The model could be adjusted to predict the climatic consequences of very large eruptions, up to the scale of massive flood basalts, and test the proposal that these are the main agent in most mass extinctions of life on Earth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth and Planetary Science Letters - Volume 236, Issues 3â4, 15 August 2005, Pages 721-731
Journal: Earth and Planetary Science Letters - Volume 236, Issues 3â4, 15 August 2005, Pages 721-731
نویسندگان
Anne-Lise Chenet, Frédéric Fluteau, Vincent Courtillot,