Mid-infrared emission prior to strong earthquakes analyzed by remote sensing data

被引:280
作者
Ouzounov, D
Freund, F
机构
[1] NASA, Goddard Space Flight Ctr, SSAI, Greenbelt, MD 20771 USA
[2] San Jose State Univ, Dept Phys, San Jose, CA 95192 USA
[3] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
来源
MONITORING OF CHANGES RELATED TO NATURAL AND MANMADE HAZARDS USING SPACE TECHNOLOGY | 2004年 / 33卷 / 03期
关键词
remote sensing and electromagnetic processes; satellite thermal image; convective heat flux; earthquake dynamics and mechanics; creep and deformation;
D O I
10.1016/S0273-1177(03)00486-1
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Solid Earth-atmosphere interactions and possibly solid Earth-seafloor interactions prior to major earthquakes are the subject of this study. Using data from Moderate Resolution Imaging Spectroradiometer (MODIS) onboard National Aeronautical Space Agency (NASA) Terra and Aqua satellites, we have begun to analyze infrared (IR) emissivity, land surface temperature (LST) and sea surface temperature (SST) data. Specifically, we look for correlations between solid Earth processes and atmosphere/ocean dynamics prior to strong earthquakes, selecting examples from 2001 and 2000. We find evidence for such correlations, specifically for a thermal anomaly LST pattern that is apparently related to pre-seismic activity. A new mechanism has recently been proposed based on positive hole-type charge carriers in rocks, which become activated when rocks are subjected to high levels of stress prior [J. Geodyn. 33 (2002) 545-572]. The appearance of these electronic charge carriers within a finite rock volume leads to enhanced IR emission from the rock surface in the 8-12 mum region. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:268 / 273
页数:6
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