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Spatial dynamics of estuarine water surface temperature from airborne remote sensing

Spatial dynamics of estuarine water surface temperature from airborne remote sensing
Spatial dynamics of estuarine water surface temperature from airborne remote sensing
This paper examines the applicability of airborne remote sensing to the characterization and quantification of the spatial dynamics of water surface temperature (WST) within estuaries. For this, a series of successive airborne Thematic Mapper thermal images was acquired of Kirkcudbright Bay, an estuary in the United Kingdom, on two dates. Spatial dynamics were determined by two techniques: (1) qualitatively, which involved interpreting features ‘by eye’; and (2) by the velocimetric technique of maximum cross correlation (MCC). Qualitatively, complex spatial dynamics were identified over a wide range of spatial and temporal scales, associated with the creation and dissipation of eddies, and the convergence and divergence of fronts, all of which were superimposed on the synoptic tidal flow. MCC was effective for producing synoptic velocity fields, but the minimum cell size was constrained by image noise, limiting the ability to analyze small-scale spatial dynamics. The effectiveness of MCC was related to the ratio of spatially correlated variance to spatially independent variance, as estimated from the variogram. Suggestions for optimizing the application of airborne remote sensing to estuarine spatial dynamics are presented.
estuarine dynamics, remote sensing, cross correlation, water surface temperature, uk, scotland, solway firth
0272-7714
608-615
Hedger, Richard D.
cfc8e4de-3a1e-49a3-9c20-3e64dc3b87ab
Malthus, Tim J.
5fa6d98e-172d-4e7b-b769-d98a070cfcbe
Folkard, Andrew M.
fdc2440c-7152-4353-af33-e5961d78c034
Atkinson, Peter M.
96e96579-56fe-424d-a21c-17b6eed13b0b
Hedger, Richard D.
cfc8e4de-3a1e-49a3-9c20-3e64dc3b87ab
Malthus, Tim J.
5fa6d98e-172d-4e7b-b769-d98a070cfcbe
Folkard, Andrew M.
fdc2440c-7152-4353-af33-e5961d78c034
Atkinson, Peter M.
96e96579-56fe-424d-a21c-17b6eed13b0b

Hedger, Richard D., Malthus, Tim J., Folkard, Andrew M. and Atkinson, Peter M. (2007) Spatial dynamics of estuarine water surface temperature from airborne remote sensing. Estuarine, Coastal and Shelf Science, 71 (3-4), 608-615. (doi:10.1016/j.ecss.2006.09.009).

Record type: Article

Abstract

This paper examines the applicability of airborne remote sensing to the characterization and quantification of the spatial dynamics of water surface temperature (WST) within estuaries. For this, a series of successive airborne Thematic Mapper thermal images was acquired of Kirkcudbright Bay, an estuary in the United Kingdom, on two dates. Spatial dynamics were determined by two techniques: (1) qualitatively, which involved interpreting features ‘by eye’; and (2) by the velocimetric technique of maximum cross correlation (MCC). Qualitatively, complex spatial dynamics were identified over a wide range of spatial and temporal scales, associated with the creation and dissipation of eddies, and the convergence and divergence of fronts, all of which were superimposed on the synoptic tidal flow. MCC was effective for producing synoptic velocity fields, but the minimum cell size was constrained by image noise, limiting the ability to analyze small-scale spatial dynamics. The effectiveness of MCC was related to the ratio of spatially correlated variance to spatially independent variance, as estimated from the variogram. Suggestions for optimizing the application of airborne remote sensing to estuarine spatial dynamics are presented.

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More information

Published date: February 2007
Keywords: estuarine dynamics, remote sensing, cross correlation, water surface temperature, uk, scotland, solway firth

Identifiers

Local EPrints ID: 54961
URI: http://eprints.soton.ac.uk/id/eprint/54961
ISSN: 0272-7714
PURE UUID: 4e359d12-4068-463c-ad4d-f39c1417730e
ORCID for Peter M. Atkinson: ORCID iD orcid.org/0000-0002-5489-6880

Catalogue record

Date deposited: 01 Aug 2008
Last modified: 16 Mar 2024 02:46

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Contributors

Author: Richard D. Hedger
Author: Tim J. Malthus
Author: Andrew M. Folkard
Author: Peter M. Atkinson ORCID iD

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