The aim of this research is to improve the assessment of carbon volumes in organic-rich soils and peat using remotely-sensed airborne radiometrics. The theory being applied is that saturated organic-rich soil and peat attenuate gamma-radiation from underlying rocks. Airborne geophysical data generated by the Tellus Survey and the EU-funded Tellus Border Survey, are used to estimate peat depth by calculating the degree of reduced radioactivity signal. Coregionalization uses the degree of spatial correlation between peat depth and the attenuation of the radiometric signal to update a limited sampling regime of ground-based measurements with remotely acquired data. Utilising the inverse spatial relationship, cokriging uses the coefficients from cross variograms between ground-based peat thickness measurements and airborne radiometric data to produce an updated cokriged map which can be used in calculations of carbon stocks. The results from areas where there is good ground validation are used to estimate peat depths where ground data are limited. The broader significance is the use of remote sensing to record temporal changes in peat covered areas.
|Title of host publication||Lecture Notes in Earth System Sciences|
|Publication status||Published - 01 Jan 2014|
|Name||Lecture Notes in Earth System Sciences|
|Publisher||Springer, Berlin, Heidelberg|
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)