Listen to the Ocean Warming
Wenbo Wu
Woods Hole Oceanographic Institution
- Date & Time
- Location
- Online-only seminar via Microsoft Teams
- Summary
As the major buffer of Earth’s energy imbalance, the ocean plays a key role in regulating global climate and temperature changes. However, accurate estimation of global ocean temperature change remains a challenging sampling problem. To complement existing point measurements, we have developed a novel and low-cost method of using travel time changes of acoustic waves from repeating natural earthquakes to infer basin-scale average ocean temperature changes. Using the land-based seismometers and CTBTO hydrophones, we have detected not only seasonal signals, which are generally consistent with that in previous oceanographic datasets of ECCO and Argo, but also interesting signals missing in ECCO and Argo. Recently, we are working on the frequency and mode dependent travel time changes of these acoustic signals, which could reveal depth information of ocean property changes. I will also talk about the challenges of the multiple frequency measuring and mode tomography and the opportunities of Distributed Acoustic Sensing in T-wave study.
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