Peat Mapping Associations of Airborne Radiometric Survey Data
This study considers recent airborne radiometric (gamma ray) survey data, obtained at high-resolution, across various regions of the UK. The datasets all display a very evident attenuation of signal in association with peat, and intra-peat variations are observed. The geophysical response variations...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-01-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-4292/6/1/521 |
| _version_ | 1798030757595185152 |
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| author | David Beamish |
| author_facet | David Beamish |
| author_sort | David Beamish |
| collection | DOAJ |
| description | This study considers recent airborne radiometric (gamma ray) survey data, obtained at high-resolution, across various regions of the UK. The datasets all display a very evident attenuation of signal in association with peat, and intra-peat variations are observed. The geophysical response variations are examined in detail using example data sets across lowland areas (raised bogs, meres, fens and afforested peat) and upland areas of blanket bog, together with associated wetland zones. The radiometric data do not map soils per se. The bedrock (the radiogenic parent) provides a specific amplitude level. Attenuation of this signal level is then controlled by moisture content in conjunction with the density and porosity of the soil cover. Both soil and bedrock variations need to be jointly assessed. The attenuation theory, reviewed here, predicts that the behaviour of wet peat is distinct from most other soil types. Theory also predicts that the attenuation levels observed across wet peatlands cannot be generally used to map variations in peat thickness. Four survey areas at various scales, across England, Scotland, Wales and Ireland are used to demonstrate the ability of the airborne data to map peat zones. A 1:50 k national mapping of deep peat is used to provide control although variability in the definition of peat zones across existing databases is also demonstrated. |
| first_indexed | 2024-04-11T19:46:27Z |
| format | Article |
| id | doaj.art-daf01f541cfa45b6ab53c24641b32388 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-04-11T19:46:27Z |
| publishDate | 2014-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-daf01f541cfa45b6ab53c24641b323882022-12-22T04:06:29ZengMDPI AGRemote Sensing2072-42922014-01-016152153910.3390/rs6010521rs6010521Peat Mapping Associations of Airborne Radiometric Survey DataDavid Beamish0British Geological Survey, Keyworth, Nottingham NG12 5GG, UKThis study considers recent airborne radiometric (gamma ray) survey data, obtained at high-resolution, across various regions of the UK. The datasets all display a very evident attenuation of signal in association with peat, and intra-peat variations are observed. The geophysical response variations are examined in detail using example data sets across lowland areas (raised bogs, meres, fens and afforested peat) and upland areas of blanket bog, together with associated wetland zones. The radiometric data do not map soils per se. The bedrock (the radiogenic parent) provides a specific amplitude level. Attenuation of this signal level is then controlled by moisture content in conjunction with the density and porosity of the soil cover. Both soil and bedrock variations need to be jointly assessed. The attenuation theory, reviewed here, predicts that the behaviour of wet peat is distinct from most other soil types. Theory also predicts that the attenuation levels observed across wet peatlands cannot be generally used to map variations in peat thickness. Four survey areas at various scales, across England, Scotland, Wales and Ireland are used to demonstrate the ability of the airborne data to map peat zones. A 1:50 k national mapping of deep peat is used to provide control although variability in the definition of peat zones across existing databases is also demonstrated.http://www.mdpi.com/2072-4292/6/1/521remote sensingairborne geophysicalradiometricpeatwetlandmapping |
| spellingShingle | David Beamish Peat Mapping Associations of Airborne Radiometric Survey Data Remote Sensing remote sensing airborne geophysical radiometric peat wetland mapping |
| title | Peat Mapping Associations of Airborne Radiometric Survey Data |
| title_full | Peat Mapping Associations of Airborne Radiometric Survey Data |
| title_fullStr | Peat Mapping Associations of Airborne Radiometric Survey Data |
| title_full_unstemmed | Peat Mapping Associations of Airborne Radiometric Survey Data |
| title_short | Peat Mapping Associations of Airborne Radiometric Survey Data |
| title_sort | peat mapping associations of airborne radiometric survey data |
| topic | remote sensing airborne geophysical radiometric peat wetland mapping |
| url | http://www.mdpi.com/2072-4292/6/1/521 |
| work_keys_str_mv | AT davidbeamish peatmappingassociationsofairborneradiometricsurveydata |