Identification

Title

Magnetotelluric and Transient Electromagnetic data from Afar, Ethiopia (NERC Grant NE/E007147/1)

Abstract

This data set comprises broadband magnetotelluric (MT) and transient electromagnetic (TEM) data collected during three field seasons in 2008, 2009 and 2010 by a team of researchers from the University of Edinburgh, UK, IMAGIR, Brest, France and the Institute for Geophysics, Space Science and Astronomy at Addis Ababa University, Ethiopia. The MT dataset includes the original time series and processed transfer functions. The time series data are provided in the original raw data format with files to convert them to ascii. Raw and processed TEM data, collected with a Geonics PROTEM system, are included. We provide information on the locations and the processing and include the necessary instrument response functions and metadata to reproduce our results from the raw data.

Resource type

dataset

Resource locator

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item161826

name: Data

function: download

https://doi.org/10.5285/c9ec9000-bc46-450e-a8bc-5c35cfdf6703

name: Digital Object Identifier (DOI)

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607705

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

GEMET - INSPIRE themes

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Rift zone

Rift faults

Magnetotelluric surveys

originating controlled vocabulary

title

BGS Thesaurus of Geosciences

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

40.0000

East bounding longitude

41.5000

North bounding latitude

13.0000

South bounding latitude

11.5000

Extent

Extent group

authority code

title

British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus

reference date

date type

creation

effective date

1979

code identifying the extent

Afar Rift [id=985003]

Extent group

authority code

title

ISO 3166_1 alpha-2

reference date

date type

revision

effective date

2009

code identifying the extent

ET

Extent group

authority code

title

ISO 3166_1 alpha-3

reference date

date type

revision

effective date

2009

code identifying the extent

ETH

Extent group

authority code

title

British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus

reference date

date type

creation

effective date

1979

code identifying the extent

ETHIOPIA [id=692000]

Temporal reference

Temporal extent

Begin position

2008-01-01

End position

2010-03-31

Dataset reference date

date type

creation

effective date

2021-01-22

Frequency of update

notApplicable

Quality and validity

Lineage

Magnetotelluric (MT) and Transient electromagnetic (TEM) data. The following associated publications may have more lineage details: Johnson, N. E., Whaler, K. A., Hautot, S., Fisseha, S., Desissa, M., & Dawes, G. J. K. (2015). Magma imaged magnetotellurically beneath an active and an inactive magmatic segment in Afar, Ethiopia. In T. Wright, A. Ayele, D. Ferguson, T. Kidane, & C. Vye-Brown (Eds.), Magmatic rifting and active volcanism (Vol. 420, pp. 105–125). Geological Society, London, Special Publications. Desissa, M, Johnson, N E, Whaler, K A et al., 2013. A mantle magma reservoir beneath an incipient mid-ocean ridge in Afar, Ethiopia, Nature Geoscience, 6, 861-865, doi: 10.1038/ngeo1925 Medynski, S, Pik, R, Burnard, P, Vye-Brown, C, France, L, Schimmelpfennig, I, Whaler, K, Johnson, N, Benedetti, L, Ayelew, D and Yirgu, G, 2015, Stability of rift axis magma reservoirs: spatial and temporal evolution of magma supply in the Dabbahu rift segment (Afar, Ethiopia) over the past 30 kyr, Earth Planet. Sci. Lett., 409, 278-289, doi: 10.1016/j.epsl.2014.11.002 Ebinger, C J, Keir, D, Bastow, I D, Whaler, K A, Hammond, J O S, Ayele, A, Miller, M S, Tiberi, C and Hautot, S, 2017. Crustal structure of active deformation zones in Africa: Implications for global crustal processes, Tectonics, 36, 3298–3332, doi: 10.1002/2017TC004526

Conformity

Conformity report

specification

title

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

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

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

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

MT timeseries: original raw binary in system specific format (SPAM Mk III and SPAM Mk IV) with files to convert to ascii

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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.

Responsible organisations

Responsible party

organisation name

University of Edinburgh

email address

kathy.whaler@ed.ac.uk

responsible party role

originator

Responsible party

organisation name

University of Edinburgh

email address

kathy.whaler@ed.ac.uk

responsible party role

principalInvestigator

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2022-09-27

Metadata language

eng