Rayleigh wave phase delays and Vsv upper-mantle structure in the Pacific
This repository contains data and inversion results for the SOLA finite-frequency tomography of the Pacific upper-mantle. It is linked to the paper by Latallerie et al., in prep, which follows one from the synthetic tomography paper (Latallerie et al., 2025, Seismica), which both provide more information. The code repository for the finite-frequency SOLA tomography can be found at Gitlab:
https://gitlab.com/FranckLatallerie/sola_ffsw.git
The dataset consists of Rayleigh wave phase delays (dispersion) measured on vertical component seismograms for earthquake-receiver pairs across the Pacific hemisphere. Phase delays are measured using synthetic reference seismogram computed with normal-mode summation using the MINEOS software (e.g. Masters et al., 2011) in the radial reference model stw105 (Kustowski et al., 2008). Observed seismograms were downloaded from the Earthscope (formerly IRIS) Data Management Center (IRIS DMC, 2012). All network and stations used are listed in the Acknowledgements of the README file. The model represents the vertically polarised shear wave velocity (Vsv) 3D structure of the upper mantle in the Pacific. It is accompanied by full 3D resolution and uncertainty. The 3D tomographic grid is made of voxels of size 2 by 2 degrees laterally, and 25 km vertically, spanning the whole sphere, starting at the surface down to ~400km depth. In the files, the longitude is the fastest varying coordinate, then latitude, followed by radius. The midpoints of the voxels range between 1 and 359 for longitude and between 89 (north) to -89 (south) for latitude, both in steps of 2 degrees, while radius changes from 6358.5 to 5983.5 km inclusive, in steps of 25 km.
Simple
- Date (Creation)
- 2025-04-11
- Maintenance and update frequency
- notApplicable notApplicable
- GEMET - INSPIRE themes, version 1.0
- BGS Thesaurus of Geosciences
-
- Citable Data
- Seismology
- Seismic tomography
- NGDC Deposited Data
- Surface waves
- dataCentre
- Keywords
-
- NERC_DDC
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- restricted
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
- Other constraints
- Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk ) for advice, should the position not be clear.
- Metadata language
- EnglishEnglish
- Topic category
-
- Geoscientific information
- Geographic identifier
-
PACIFIC OCEAN [id=2002258]
- Date (Revision)
- 2010
N
S
E
W
- Begin date
- 2023-02-01
- End date
- 2024-07-31
- Unique resource identifier
- WGS 84 (EPSG::4326)
- Distribution format
-
-
ASCII plain text files
()
-
ASCII plain text files
()
- OnLine resource
- Data
- Hierarchy level
- dataset Dataset
- Other
- dataset
Conformance result
- Date (Publication)
- 2011
- Explanation
- See the referenced specification
- Pass
- No
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
- See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Pass
- No
- Statement
- Data are measured using the multi-taper technique (Thompson 1982) between frequencies of 6 to 21 mHz, in steps of 1mHz. The first 5 Slepians are used (Slepian 1978). A datum is the average of measurements over the 5 tapers, and while the standard deviation represents the uncertainty. The tomographic model is developed by applying the SOLA inverse method (Zaroli 2016) to the data using finite-frequency theory (Zhou 2009).
- File identifier
- 33ebc8ed-a45d-3522-e063-3050940af48b XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- dataset Dataset
- Date stamp
- 2025-11-13
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
Point of contact
British Geological Survey
Environmental Science Centre,Keyworth
,
NOTTINGHAM
,
NOTTINGHAMSHIRE
,
NG12 5GG
,
United Kingdom
+44 115 936 3100
- Dataset URI
- http://data.bgs.ac.uk/id/dataHolding/13608405
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available
NERC Data Catalogue Service