Seismic Ocean Thermometry of the Kuroshio Extension Region

The IMS hydrophone data are available directly from the CTBTO upon request and signing a confidentiality agreement to access the virtual Data Exploitation Centre (vDEC: https://www.ctbto.org/resources/for-researchers-experts/vdec) (Preparatory Commission For The Comprehensive Nuclear Test-Ban Treaty Organization, 2002). All seismic data were downloaded through IRIS Data Management Center, including the seismic networks II (Scripps Institution of Oceanography, 1986), IU (Albuquerque Seismological Laboratory/USGS, 2014), PS (University of Tokyo, 1989), G (Institut de physique du globe de Paris (IPGP) & École et Observatoire des Sciences de la Terre de Strasbourg (EOST), 1982). Global Seismographic Network (GSN) is a cooperative scientific facility operated jointly by the Incorporated Research Institutions for Seismology (IRIS), the United States Geological Survey (USGS) and the National Science Foundation (NSF), under Cooperative Agreement EAR-1261681. Bathymetry data were downloaded from and freely available at https://download.gebco.net/ (GEBCO Compilation Group, 2023). The sediment thickness data were downloaded from https://ngdc.noaa.gov/mgg/sedthick/ (Straume et al., 2019). Argo data were collected and made freely available by the International Argo Program and the national programs that contribute to it (http://www.argo.ucsd.edu, http://argo.jcommops.org). The Argo Program is part of the Global Ocean Observing System (Argo, 2000). The ECCO data were available at https://podaac.jpl.nasa.gov/dataset/ECCO_L4_TEMP_SALINITY_05DEG_DAILY_V4R4 (Fenty & Wang, 2020). The seismic-wave processing code is available at https://github.com/joernc/sot (joernc et al., 2023).