Deep-sea observations and modeling of the 2004 Sumatra tsunami in Drake Passage
作者： Alexander B. Rabinovich , Philip L. Woodworth , Vasily V. Titov
DOI: 10.1029/2011GL048305
关键词: Source area 、 Deep sea 、 Seismology 、 Tide gauge 、 Bottom pressure 、 Geology 、 Tsunami wave 、 Amplitude
摘要: [1] The 2004 Sumatra tsunami was clearly recorded by two UK bottom pressure gauges, DPN and DPS, deployed in Drake Passage between South America Antarctica. These open-ocean records were examined to estimate characteristics of the waves compare results numerical simulations with observations. Maximum wave heights measured at these gauges 4.9 cm 7.4 DPS; travel times from source area 19 h 46 min 39 respectively, consistent obtained nearby coastal tide gauges. The model described well frequency content, amplitudes general structure observed waves, only small time shifts probably related dispersion effects. 15 for 10 modeled leading observations each case. Further inspection simulated revealed that identified are second (main) train propagating energy conserving route along mid-ocean ridges, while first travelling fastest across ocean remained unrecognizable DPS undetectable because their insignificant compared background variability.
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