Sound Velocity Profiles for GNSS-A in Hikurangi (2019-2024)

This CTD data set was collected as part of GNSS-A operations on the Hikurangi 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 cruises when the seafloor transponder arrays were first deployed. The data files presented here are derived from those CTD casts, are in ASCII format and provide processed sound velocity data near each GNSS-A array. The file names identify the site and year. The files were generated with NSF funding as part of the project called Along Strike Variation in Shallow, Offshore Strain Accumulation and Slow Slip at Hikurangi Subduction Margin, New Zealand, funded with NSF awards OCE-1754929 and OCE-1754767, and New Zealand Ministry for Business and Innovation Endeavour Research Fund, contract CO5X1605 to GNS Science.