Data DOI: 10.1594/IEDA/324716
Citation:
Kardell, Dominic, et al., (2019), Two-dimensional (2-D) tomographic P-wave velocity structure of the upper crust between the Mid-Atlantic Ridge and the Rio Grande Rise. Marine Geoscience Data System (MGDS). doi:10.1594/IEDA/324716
Title:
Two-dimensional (2-D) tomographic P-wave velocity structure of the upper crust between the Mid-Atlantic Ridge and the Rio Grande Rise
Abstract:
These gridded data files present tomographic models of P-wave seismic velocity structure of the upper 2-3 km of oceanic crust between the Mid-Atlantic Ridge and the Rio Grande Rise. The models were derived from active-source data acquired during the CREST 2-D seismic experiment conducted during Langseth cruise MGL1601 in 2016 (chief scientists Bobby Reece and Gail Christeson). The models and results are described in Kardell et al. (2019). Using a 2-D constant gradient starting model of crustal velocity, iterative tomographic inversions were performed with traveltime picks of refracted arrivals on more than 2000 shot gathers. Traveltime residuals were inverted for 2-D slowness perturbations, and ray paths and traveltimes were predicted using a shortest-path algorithm. Ray tracing was performed on a 2-D grid constrained by seafloor topogrophy from multi-beam measurements and basement topography picked on migrated seismic images. The data set is in netCDF grd format, which can be used in GMT software. It was generated as part of the CREST project: Crustal Reflectivity Experiment Southern Transect. Funding was provided by NSF grants OCE15-37108 and OCE15-37169.
Creator(s):
Kardell, Dominic
Christeson, Gail
Estep, Justin
Reece, Robert
Carlson, Richard
Date Available:
2019-03-06
Date Created:
2019-03-05
Data Type(s):
Seismic:Velocity:Model
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
IsPartOf:
IsDerivedFrom:
doi: 10.1594/IEDA/323597
IsSupplementedBy:
doi: 10.1594/IEDA/324720
IsSupplementedBy:
doi: 10.1594/IEDA/324718