Identification info

Alternative title

GB_EstimatedUrbanSoilChemistry

Metadata Language

English (en)

Dataset Reference Date ()

2009

Identifier

http://data.bgs.ac.uk/id/dataHolding/13605363

Maintenance and update frequency

asNeeded

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Soil chemistry

• Lead

• Chromium

• Cadmium

• Nickel

• Arsenic

Keywords

• NERC_DDC

Limitations on Public Access

otherRestrictions

Other constraints

license

Other constraints

Either : (i) the dataset has not been formally approved by BGS for access and use by external clients under license; and / or (ii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted before the dataset can be provided to, or accessed by, BGS staff or external clients. 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 access restrictions. This staff member should revert to the IPR Section (IPR@bgs.ac.uk) for advice, should the position not be clear.

Use constraints

otherRestrictions

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

The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage. iprdigital@bgs.ac The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage.

Spatial representation type

vector

Denominator

50000

Topic category

• Geoscientific information

Extent

GBN

Dataset Reference Date ()

2009

Extent

GREAT BRITAIN [id=139600]

Dataset Reference Date ()

1979

Begin date

1968

End date

2010

Additional information

User Guide for the British Geological Survey Urban Soil Chemistry dataset (BGS Internal Report IR/11/039)

 

Distribution Information

Data format

• Shapefiles

  ()

 

Quality Scope

dataset

Other

dataset

Statement

The dataset is derived from high resolution urban soil geochemical data from the BGS Geochemical Baseline Survey of the Soil geochemical surveys have been carried out, by BGS, at 24 urban centres in England, Scotland and Wales. Urban geochemical surveying is based on the collection of samples on a 500 m grid at a density of approximately 4 samples per km2 across the urban areas. Samples were collected from open ground as close as possible to the centre of each 500 m grid cell. At each sample site, composite samples based on 5 sub-samples taken at the centre and four corners of a 20m square, were collected from the topsoil ('A' soil sample; 5-20 cm depth) and subsurface ('S'soil sample; 35-50 cm depth). Approximately 40 chemical elements were determined in the <2mm size fraction of the 'A' soils. Either the <150 micron or <2mm fraction of the 'S' soil samples were analysed. The point source urban soil chemistry data contain analysed results from these sampling campaigns. This dataset indicates the estimated topsoil As, Cd, Cr, Ni and Pb concentrations (mg kg-1) derived by spatial interpolation of the point source urban soil PHE data. Urban soil geochemical data generally have large positive skewness coefficients so were transformed by taking natural logarithms. To overcome the bias associated with traditional measures of location (mean) and scale (standard deviation) for log-normal data, the inverse distance weighted (IDW) mean and standard deviation of log transformed.

Metadata

File identifier

9df8df52-d75d-37a8-e044-0003ba9b0d98 XML

Metadata Language

English (en)

Resource type

dataset

Metadata Date

2022-05-19

Metadata standard name

UK GEMINI

Metadata standard version

2.3