Abnormal modulation of atmospheric parameters during the tsunami of 2004
Abnormal modulation of atmospheric parameters during the tsunami of 2004
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发表时间：
2012
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通讯作者：
R. Vishnu;H. Varikoden;Vivek Kumar;S. Das;G. Kumar;V. Symon
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作者：
R. Vishnu;H. Varikoden;Vivek Kumar;S. Das;G. Kumar;V. Symon
本文讨论了在印度一个热带山区和一个沿海站观测到的天气要素的异常变化。2004年12月26日，由于苏门答腊岛地区发生高震级地震，在印度海岸发生海啸时，注意到大气参数发生异常变化。在这次地震发生前，西高止山脉野外观测站Braemore(北纬8o45？，东经77o05？，海拔360米)记录到了天气要素的异常和巨大的变化。靠近东部沿海带的Minambakkam(北纬13oN，东经80o18e，SLP 16m)也记录到了异常变化。在Braemore现场站，观察到大气参数同时发生变化；海啸发生当天，气压降低0.6百帕，相对湿度增加30，气温显著降低3摄氏度以上。此外，不同寻常的是，前一天晚上的相对湿度没有达到100。然而，在Minambakkam站，相对湿度增加了10%，温度急剧下降约2.5摄氏度。这两个台站的变化几乎同时发生，持续时间也几乎相同。因此，可以得出结论，这些变化与高震级地震和随后的海啸有关。
This paper discusses the abnormal changes in weather elements observed at a tropical mountain location and a coastal station in India. Abnormal changes were noticed in the atmospheric parameters at a time close to the occurrence of tsunami on the Indian coasts due to high magnitude earthquakes in the Sumatra region on 26 December 2004. Close to the time of this earthquake occurrence, uncharacteristic and large magnitude changes in weather elements were recorded at Braemore (8o45â²N, 77o05â²E, 360 m amsl), a mountain field station at Western Ghats. Abnormal changes were also recorded at Minambakkam (13oN, 80o18â²E, 16 m SLP), close to eastern coastal belts. In the Braemore field station, simultaneous changes were observed in the atmospheric parameters; decrease in pressure by 0.6 hPa, increase in relative humidity by 30 and a prominent reduction in air temperature by more than 3oC on the day of tsunami. Also, unusually the relative humidity did not reach 100 on the previous night. However, in the Minambakkam station, the relative humidity increased by 10 associated with a sharp decrease in temperature by about 2.5oC. The changes in both the stations occurred almost at the same time and duration. Therefore, it may be concluded that these changes are associated with the high magnitude earthquake and subsequent tsunami.