897af404-d0d9-5801-e054-002128a47908
English
dataset
British Geological Survey
+44 115 936 3100
Environmental Science Centre,Keyworth
NOTTINGHAM
NOTTINGHAMSHIRE
NG12 5GG
United Kingdom
enquiries@bgs.ac.uk
pointOfContact
2024-03-27
UK GEMINI
2.3
http://data.bgs.ac.uk/id/dataHolding/13607465
Long-term groundwater-level anomalies across Sub-Saharan Africa (NERC grant NE/M008932/1)
2019-05-21
creation
http://data.bgs.ac.uk/id/dataHolding/13607465
Multi-decadal time series of groundwater levels were compiled by the authors from records of observation wells initiated and maintained by government departments and research institutions in nine countries in sub-Saharan Africa. The pan-African collation of these hydrographs was initiated at the 41st Congress of the International Association of Hydrogeologists (IAH) in Marrakech (Morocco) on 14th September 2014. All records were subjected to a rigorous review by the authors during which the integrity, continuity, duration and interpretability of records were evaluated. This process included dedicated workshops in Benin, Tanzania, and Uganda, and records failing these tests were discarded from the analysis. Procedures included taking of the first time derivative to identify anomalous spikes in records commonly associated with errors of data-entry. Where multiple records in same geographic and climate zone were available (e.g. Benin, South Africa) we prioritized records remote from potential areas of intensive abstraction. Statistical clustering of records was also used in the Limpopo Basin of South Africa to identify the representativity of employed records at Modderfontein and Sterkloop.
Professor Richard Taylor
University College London
Department of Geography
Gower Street
London
WC1E 6BT
not available
pointOfContact
Professor Richard Taylor
University College London
Department of Geography
Gower Street
London
WC1E 6BT
not available
principalInvestigator
notApplicable
https://resources.bgs.ac.uk/images/geonetworkThumbs/897af404-d0d9-5801-e054-002128a47908.png
Geology
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
NGDC Deposited Data
Ground water level
BGS Thesaurus of Geosciences
2022
revision
NGDC Deposited Data
dataCentre
NERC_DDC
otherRestrictions
no limitations
The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
otherRestrictions
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.
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
English
geoscientificInformation
ISO 3166_1 alpha-3
2009
revision
BEN
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
BENIN [id=630000]
ISO 3166_1 alpha-2
2009
revision
BF
ISO 3166_1 alpha-3
2009
revision
BFA
ISO 3166_1 alpha-2
2009
revision
BJ
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
BURKINA FASO [id=626000]
ISO 3166_1 alpha-2
2009
revision
GH
ISO 3166_1 alpha-3
2009
revision
GHA
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
GHANA [id=632000]
ISO 3166_1 alpha-2
2009
revision
NA
ISO 3166_1 alpha-3
2009
revision
NAM
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
NAMIBIA [id=665000]
ISO 3166_1 alpha-2
2009
revision
NE
ISO 3166_1 alpha-3
2009
revision
NER
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
NIGER [id=627000]
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
SOUTH AFRICA [id=670000]
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
TANZANIA [id=685000]
ISO 3166_1 alpha-2
2009
revision
UG
ISO 3166_1 alpha-3
2009
revision
UGA
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
UGANDA [id=689000]
ISO 3166_1 alpha-2
2009
revision
ZA
ISO 3166_1 alpha-3
2009
revision
ZAF
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus
1979
creation
ZIMBABWE [id=677000]
ISO 3166_1 alpha-2
2009
revision
ZW
ISO 3166_1 alpha-3
2009
revision
ZWE
-1.5000
35.7400
-24.2900
13.5500
1955-01-01
2017-12-31
Text File
https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item127973
download
https://www.bgs.ac.uk/services/ngdc/citedData/catalogue/a6d78c2e-3420-4346-9182-4fd437672412.html
information
https://www.nature.com/articles/s41586-019-1441-7
information
dataset
dataset
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
2011
publication
See the referenced specification
false
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
2010-12-08
publication
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
false
Infilling of occasional gaps of less than a week in daily groundwater-level records was achieved by linear interpolation. Because permission to enable access to absolute values of groundwater levels and precipitation at all locations in this dataset has not been granted, both datasets are provided as anomalies with respect to the long-term value for the period of observation.