Effect of ocean eddies on seismic T waves
Abstrak
Earthquakes excite sound waves along continental margins, T waves, that can propagate for thousands of kilometers in the ocean. The complex T waveforms are shaped by the extended region of seismic-to-acoustic conversion. Because the conversion has a width comparable to ocean eddies, T waveforms can be modified substantially by the subsequent propagation through eddies. Sound speed anomalies associated with eddies shift arrival times, so waves arriving from different azimuths can have experienced different phase shifts, making the recorded waveform an eddy-dependent interference pattern. Leveraging this multipath propagation can improve the spatial resolution of deep-ocean temperature change estimated with T waves.
Topik & Kata Kunci
Penulis (7)
Shane Zhang
Shirui Peng
Haakon L. L. Ervik
Zhichao Shen
Wenbo Wu
Zhongwen Zhan
Jörn Callies
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.1121/10.0041805
- Akses
- Open Access ✓