Data DOI: 10.26022/IEDA/331358
Citation:
Blackman, Donna, et al., (2023), Residual mantle Bouguer anomaly (RMBA) grid, 42-50 Ma NE Pacific between Molokai and Murray FZ. Marine Geoscience Data System (MGDS). doi:10.26022/IEDA/331358
Title:
Residual mantle Bouguer anomaly (RMBA) grid, 42-50 Ma NE Pacific between Molokai and Murray FZ
Abstract:
Residual mantle Bouguer anomaly grid calculated for the Ohana project located 25-30.5°N, 145.5-137.5°W in the NE Pacific. This ~500x600 km area was the site of an Ocean Bottom Seismometer array deployed Nov 2021-Feb 2023 by a team led by Gabi Laske. Donna Blackman led the bathymetric and gravity analyses. Gravity data processing started with the satellite-based Free Air Anomaly grid (grav_32.1.nc, Sandwell et al., 2014). The contributions of seafloor topography (from the corresponding bathymetry grid called Ohana_bathymetry_200m.grd), and of a constant thickness (6 km) crust were removed assuming 1900 and 400 kg/m3 density contrasts at the interfaces, respectively. The best-fit square-root of age trend of the predicted mantle Bouguer anomaly was removed as a conservative estimate of the contribution of plate cooling with age. The resultant RMBA data was gridded at 200 m. The RMBA data file is in GMT-compatible netCDF grid format.
Creator(s):
Blackman, Donna
Laske, Gabrielle
Date Available:
2023-11-01
Date Created:
2023-09-05
Data Type(s):
Gravity:Anomaly:MantleBouguerResidual
Resource Type:
Dataset
File Format(s):
application/x-netcdf
Data Curated by:
Version:
1
Language:
en
License:
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0] URI: http://creativecommons.org/licenses/by-nc-sa/3.0/us/
Related Information
IsSupplementTo:
doi: 10.26022/IEDA/331356