Title :
Analysis on the water vapor anomaly before Wenchuan earthquake based on MODIS data
Author :
Liu, Shanjun ; Cui, Lihua ; Wu, Lixin ; Wang, Zhi
Abstract :
Remote sensing data have been used to analyze the changes in column water vapor in response to the Wenchuan Ms 8.0 earthquake, occurred in China on May 12, 2008. Anomalous changes in water vapor content have been found over the epicentral and surrounding regions 11 days before the earthquake. The sudden increase in water vapor content in the atmosphere before the earthquake may be attributed to the increase in evaporation due to increase in land surface temperature. The brightness temperature of land surface around the epicenter is found to increase one day before the increase in the water vapor content.
Keywords :
atmospheric humidity; earthquakes; evaporation; land surface temperature; radiometry; remote sensing; AD 2008 05 12; China; MODIS data; Moderate Resolution Imaging Spectroradiometer; Wenchuan earthquake; brightness temperature; epicenter; evaporation; land surface temperature; remote sensing data; water vapor anomaly; Atmosphere; Content management; Earthquakes; Educational institutions; Land surface; MODIS; Ocean temperature; Remote monitoring; Sea surface; Water resources; MODIS; column water vapor anomaly; earthquake; remote sensing;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5418102
