Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 6 Hydrology: Surface water, oceanography, coastal zone, ice and snow. Chairman: K. A. Ulbricht, Co-chairman: Mikio Takagi, Liaison: R. Spanhoff

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

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Structure type:: Chapter

Chapter

Title:: A hydrological comparison of Landsat TM, Landsat MSS and black & white aerial photography. M. J. France & P. D. Hedges

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Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 717 A hydrological comparison of Landsat TM, Landsat MSS and black & white aerial photography M.J.France & P.D.Hedges Aston University, UK ABSTRACT: Landsat TM is evaluated for its accuracy in delineating, mapping and measuring, water bodies, drainage networks, catchment areas and landcover. A comparison is made with results from Landsat MSS imagery and 1:50000 scale black & white aerial photography, for the same area in North Wales, U.K. Landsat TM is found to have significant advantages over Landsat MSS for recording drainage network information. Lakes as small as 0.6 hectares can be identified using Landsat TM imagery and the delineation of small streams aids in accurately defining catchment boundaries. 1 INTRODUCTION Satellite remote sensing provides an attractive way of collecting hydrological data and is of particular significance in areas where traditional methods of hydrological data collection are inadequate or impractical. The data can be used as input to morphology or landcover -based hydrological models. This research is directed at a comparison of Landsat Multispectral Scanner (Landsat MSS) imagery, Landsat Thematic Mapper ( Landsat TM) imagery, 1:50000 scale Black & White aerial photography and the 1:50000 scale Ordnance Survey map of the area, using the same test area. Earlier work on Landsat MSS, with its 80m resolution found encouraging results in areas of high relief (Rango et al., 1975; Killpack and McCoy, 1981) but limited success in most British situations . It was thought that the Landsat TM with its greater spatial and spectral resolution might prove more successful. Table 1. Comparison of Landsat TM and MSS sensor characteristics. TM Data MSS Data Spectral Spatial Spectral Spatial Band range ,pm resoln. ,m Band range ,yu m resoln.,m 1 0.45-0.52 30 4 0.5-0.6 80 2 0.52-0.60 30 5 0.6-0.7 80 3 0.63-0.69 30 6 0.7-0.8 80 4 0.76-0.90 30 7 0.8-1.1 80 5 1.55-1.75 30 6 10.4-12. 120 7 2.08-2.35 30 Work concentrated particularly on the Landsat TM imagery as there is little relevant published material on this imagery. Specific aims were: 1. To ascertain the efficiency of drainage mapping using Landsat TM imagery. 2. To specify the most useful image enhancements for this purpose. 3. To compare the efficiency of interpretation of Landsat MSS imagery, Landsat TM imagery and Black & White aerial photography. The area selected for this research, some 235km 2 in extent, is the Dolgellau and Coed-y-Brenin area of North Wales, U.K. (see Figure 1). The area is, in the main, an upland region of hills and mountains with a maximum elevation of 754 metres. A Lowland valley runs across the southern part of the region. Streams and rivers in the area are bordered by various lowland and upland vegetation types and frequently pass through forests or woodland , giving opportunity for the examination of several water/vegetation interfaces. Figure 1. Location of study area. 2 METHOD Four Landsat MSS images, with minimal or no cloud cover, were available for the area, the best of which is a scene from May 1977. One Landsat TM quarter scene from July 1984, with little cloud coverage was available from the U.K. National Remote Sensing Centre. These images were enhanced using the GEMS image processors at NRSC, Farnborough, and Silsoe College, Bedford and an I 2 S system at NERC, Swindon. Image enhancement was mainly directed at the Landsat TM data as little published work exists on the processing of this material. Individual bands, band combinations, principal components analysis and several edge enhancement techniques were evaluated for their enhancement of linear water bodies. Similar techniques were applied to the Landsat MSS imagery. Hard-copies of enhancements

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