Sound Velocity Profiles for GNSS-A in Cascadia (2016-2019)

This CTD data set was collected as part of GNSS-A operations on the Cascadia Subduction Zone. Sound velocity profiles derived from the CTD data may be used as a reference model for calculating the two-way travel time when ranging to the seafloor transponders. The original CTD data files were acquired during UNOLS cruises AT26-20 (2014) and RR1808 (2018), when the seafloor transponder arrays were first deployed. The data files presented here are derived from those CTD data, are in ASCII format and provide processed sound velocity data near each GNSS-A array. The file names identify the site and crusie ID. The data files were generated with NSF funding as part of the projects called Constraining Slip Distribution of the Cascadia Subduction Zone Offshore Central Oregon with Seafloor Geodesy; and, Assessing the State of Locking on the Frontal Thrust of the Cascadia Subduction Zone With Seafloor Geodesy.