Theoretical Solution and Applications of Ocean Bottom Pressure Induced by Seismic Waves at High Frequencies

Deng, Han1; An, Chao1; Cai, Chen2,3; Ren, Hengxin4

2022-05-16

10.1029/2021GL096952

GEOPHYSICAL RESEARCH LETTERS   影响因子和分区

0094-8276

1944-8007

Previous studies have demonstrated that the ocean-bottom pressure associated with seismic seafloor motion is linearly proportional to the vertical seafloor acceleration, for frequencies much lower than the resonance frequency of water layer (c(0)/4h, c(0) water sound speed, h water depth). In this article, we use realistic observations to verify a theoretical relation between the ocean-bottom pressure and vertical acceleration up to the water resonance frequency. We then show two applications of the theoretical relation. First, the pressure amplitude recorded by differential pressure gauges is calibrated, and the calibration coefficient is found to vary by frequency. Second, Rayleigh wave phase velocity near the water resonance frequency can be calculated from recordings of pressure and vertical seafloor acceleration at a single station, which is useful to constrain the shallow Earth structure.

SCI ; EI

英语

其他

National Nature Science Foundation of China (NSFC)["T2122012",42176073,42106067] ; Oceanic Interdisciplinary Program of Shanghai Jiao Tong University[SL2020MS005] ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University[2021qntd23] ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311021003]

Geology

Geosciences, Multidisciplinary

WOS:000788049100001

AMER GEOPHYSICAL UNION

20222012123990

Seismology

Earthquake Measurements and Analysis:484.1

GEOSCIENCES

Web of Science

1.Shanghai Jiao Tong Univ, Key Lab Hydrodynam, Sch Naval Architecture Ocean & Civil Engn, Minist Educ, Shanghai, Peoples R China
2.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
4.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China

Deng, Han,An, Chao,Cai, Chen,et al. Theoretical Solution and Applications of Ocean Bottom Pressure Induced by Seismic Waves at High Frequencies[J]. GEOPHYSICAL RESEARCH LETTERS,2022,49(9).

Deng, Han,An, Chao,Cai, Chen,&Ren, Hengxin.(2022).Theoretical Solution and Applications of Ocean Bottom Pressure Induced by Seismic Waves at High Frequencies.GEOPHYSICAL RESEARCH LETTERS,49(9).

Deng, Han,et al."Theoretical Solution and Applications of Ocean Bottom Pressure Induced by Seismic Waves at High Frequencies".GEOPHYSICAL RESEARCH LETTERS 49.9(2022).