Template:LRA 1

From MediaWiki
Revision as of 10:46, 23 November 2016 by Dbk (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

The black outline represents geographical limit of the Greater London Authority (GLA). Areas in white represent tidal waters of the River Thames.
The London Region Atlas (LRA) covers a rectangular area of 80 x 62 km, from British National Grid coordinates: Easting 490 000 to 570 000 and Northing 153 000 to 215 000. The LRA was produced using the London Region Dataset (LRD, n=8400), created from two geochemical surveys (LOND and SEEN) carried out by the Geochemical Baseline Survey of the Environment (G-BASE) project during 2008 and 2009 for LOND, and from 2005 to 2009 for SEEN. The LOND survey is an urban soil geochemical survey based on 6801 sampling sites, 93% of which are located within the GLA, at a sampling density of 1 per 0.25 km2. SEEN is a south-east England rural soil survey done at a sampling density of 1 per 2 km2. A total of 1599 of the SEEN samples are included in the LRA area. As these are rural samples, 95% of them are outwith the GLA limit.