Receiver Functions imaging the Mantle Transition Zone beneath the African Continent

This dataset contains P-to-S converted seismic receiver functions from stations across Africa. Receiver functions are P-to-s filtered at frequencies to observe discontinuities in the mantle transition zone. Receiver functions have been used to look at topography on the mantle discontinuities and scatterers in the mid-mantle: Boyce, Alistair, and Sanne Cottaar. "Insights into Deep Mantle Thermochemical Contributions to African Magmatism from Converted Seismic Phases." Geochemistry, Geophysics, Geosystems (2021): e2020GC009478. Note: All Seismic data used is freely available from the Incorporated Research Institutions for Seismology ( https://ds.iris.edu/ds/nodes/dmc/), GeoForschungZentrum ( http://geofon.gfz-potsdam.de/), French national ( http://seismology.resif.fr/) and Institut de Physique du Globe de Paris ( http://geoscope.ipgp.fr/index.php/en/) datacenters. The attached data is stored in .PICKLE files. Scripts used to process this data, and use this data can be found in our toolkit SMURFPy: https://zenodo.org/record/4337258#.X_6-6y2l0Wo . This relies heavily on the ObsPy library https://docs.obspy.org The receiver functions are stored in separate folder for P- receiver functions, PKP- receiver functions, and PP-receiver functions. Subfolders represent different stations, and are named by #networkID.#stationID. Some folders are empty as none of the receiver functions pass quality control. Initial processing includes the data download, data rotation, filtering and windowing, and iterative deconvolution in the time domain. Different versions are created at different frequency bands as defined in the README file. Automatic Quality Control is applied, based on signal-to-noise ratios, receiver function recovery measures, and peak amplitudes in the receiver function (outside of the main P peak). We provide various time-to-depth conversions for the data. Details on how these are stored are provided in the readme. Models used are PREM (Dziewonski & Anderson 1981), ak135 (Kennett et al. 1991), AF2019CR (Celli et al. 2020), AFRP20CR (Boyce et al. 2021), SEMUCBCR (French & Romanowicz 2014), SGLOBEraniCR (Chang et al. 2015), SL2013SV (Schaeffer & Lebedev, 2013). Data resulting from NERC grant NE/R010862/1 High-resolution seismic constraints to reveal mid-mantle processes.

Date (Creation): 2021-02-25

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13607724

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Cambridge	Sanne Cottaar	not available	Originator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Earth mantle
Shear waves
Seismology
Primary waves

dataCentre

NGDC Deposited Data

Keywords

NERC_DDC

Access constraints: Other restrictions

Other constraints: licenceOGL

Other constraints: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Use constraints: 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: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Language: English

Topic category

Geoscientific information

Begin date: 1990-01-01

End date: 2019-01-01

Reference System Information

No information provided.

Distribution format

Name	Version

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	not available	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item162965	Data

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

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: Initial processing includes the data download, data rotation, filtering and windowing, and iterative deconvolution in the time domain. Different versions are created at different frequency bands as defined in the README file. Automatic Quality Control is applied, based on signal-to-noise ratios, receiver function recovery measures, and peak amplitudes in the receiver function (outside of the main P peak). We provide various time-to-depth conversions for the data. Details on how these are stored are provided in the readme. Models used are PREM (Dziewonski & Anderson 1981), ak135 (Kennett et al. 1991), AF2019CR (Celli et al. 2020), AFRP20CR (Boyce et al. 2021), SEMUCBCR (French & Romanowicz 2014), SGLOBEraniCR (Chang et al. 2015), SL2013SV (Schaeffer & Lebedev, 2013).