Identification

Title

Gro for GooD ERT (Electrical Resistivity Tomography) Data, Kwale County, Kenya (NERC grant NE/M008894/1)

Abstract

Results of Electrical Resistivity Tomography (ERT) conducted in Kwale County, Kenya December 2015 and June 2016 by University of Nairobi and Water Resources Management Authority as part of the Gro for GooD project (https://upgro.org/consortium/gro-for-good/) to characterize the aquifers in the study area. There were eight transects of length 1.2 to 6km, running W-E and NNE-SSW parallel to coastline. ERT data was analysed using RES2D inversion software. Gro for GooD - Groundwater Risk Management for Growth and Development

Resource type

dataset

Resource locator

https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item114509

function: download

http://reshare.ukdataservice.ac.uk/853667/

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607376

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Additional information source

The authors gratefully acknowledge the support of Kenya’s Water Resources Authority (formerly WRMA), the Kwale Country Government, Base Titanium Ltd., Kwale International Sugar Company Ltd., Rural Focus Ltd., and University of Nairobi who assisted in or enabled the surveys in one way or another. This research was funded by the UK Government via NERC, ESRC and DFID as part of the Gro for GooD project (UPGro Consortium Grant: NE/M008894/1).

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

Geology

Hydrogeology

Geophysics

Tomography

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

38.4500

East bounding longitude

39.7000

North bounding latitude

-3.5500

South bounding latitude

-4.6700

Extent

Extent group

authority code

title

ISO 3166_1 alpha-2

reference date

date type

revision

effective date

2009

code identifying the extent

KE

Extent group

authority code

title

ISO 3166_1 alpha-3

reference date

date type

revision

effective date

2009

code identifying the extent

KEN

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

KENYA [id=687000]

Temporal reference

Temporal extent

Begin position

2015-12-01

End position

2016-05-31

Dataset reference date

date type

creation

effective date

2018-08-20

Frequency of update

notApplicable

Quality and validity

Lineage

2-D electrical imaging/tomography survey equipment was used (Telford, 1990, Griffiths and Barker 1993). For history of ERT see Parasin, 1962. Field set of the tomography system used here included ABEM SAS 1000 Terrameter, LUND ES464 switchbox (electronic switching unit), four multi-core cables each with 21 current take out points at constant spacing of 10 metres interval, battery, communications cables, electrode jumpers, electrodes, laptop and data transfer cables. This dedicated equipment measures both ?V and I and presents a calculated apparent resistivity. The profile length was 800m and the investigated depth was 149m bgl. Roll-along technique was used. After completion of measurements, the cable was moved past one end of the line by two cables. Measurements which involved electrodes on one part of the cable which did not overlap the original end of the survey line were repeated.

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

.dat

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

contact position

School of Geography and the Environment

organisation name

University of Oxford

full postal address

Oxford

OX1 3QY

email address

not available

responsible party role

principalInvestigator

Responsible party

contact position

Smith School of Enterprise and the Environment

organisation name

University of Oxford

full postal address

Oxford

OX1 3QY

email address

not available

responsible party role

pointOfContact

Responsible party

organisation name

Rural Focus Ltd

full postal address

P.O. Box 1011-10400

Nanyuki

Kenya

email address

not available

responsible party role

originator

Responsible party

organisation name

Rural Focus Ltd

full postal address

P.O. Box 1011-10400

Nanyuki

Kenya

email address

not available

responsible party role

originator

Responsible party

organisation name

Water Resources Management Authority

email address

not available

responsible party role

originator

Responsible party

contact position

Department of Geology

organisation name

University of Nairobi

full postal address

Nairobi

Kenya

email address

not available

responsible party role

originator

Responsible party

organisation name

University of Nairobi

email address

not available

responsible party role

originator

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

2022-05-25

Metadata language

eng