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

Damen, M. C. J.

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Multivolume work

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:: 856343064

Title:: Remote sensing for resources development and environmental management

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

Scope:: XV, 547 Seiten

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856343064

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,1)

Language:: English

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

Editor:: Damen, M. C. J.

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:: 3 Spectral signatures of objects. Chairman: G. Guyot, Liaison: N. J. J. Bunnik

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: The use of Thematic Mapper imagery for geomorphological mapping in arid and semi-arid environments. A. R. Jones

Document type:: Multivolume work

Structure type:: Chapter

images from the AVHRR (Advanced Very High Resolution Radiometer) sensor of the NOAA series of meteoroid ogical satellites. On a much finer scale, Fig. 1 shows a TM band 4 quarter scene (90 x 90 kms) taken from the Landsat 4 satellite. The intricate geological structures trending east-west are the southern most vestiges of the Atlas mountains. Note how easy it is to identify complex folding (A) and faults (B). Whole drainage networks can be studied and the ease by which dry ephemeral channels(C) can be separated from rivers with flowing water (D) demonstrates the ability of such imagery to monitor geomorphological phenomena in areas of difficult terrain. b Figure 2. TM4 of Chott El Guettar: a) 29-1-1983 b) 23-9-1985 The effectiveness of multi-date satellite imagery in monitoring geomorphological activity is demonstrated by Figure 2, two TM band 4 images (15 xl5 kms) of a fine grained, saline depression known as a playa or chott in southern Tunisia are shown. Figure 2a is a winter image (29-1-83) while Fig. 2b is taken at the end of the dry season (23-9-85). Marked differences in the playa are clearly visible which are mainly assoc iated with surface moisture. The summer image shows a dry playa with water, and therefore wetter surface, entering:the playa from the west. Most of this is residue from the irrigation of oasis further up the channel. The winter image shows a different situation with a greater flow of water from the western channel, but also inputs from numerous ephemeral channels, on the east, which were previously dry resulting in the flooding of the playa. 3 SATELLITE THEMATIC MAPPER The Landsat series of Earth observation satellites has been well documented (Colwell 1983, USGS 1979) and the numerous applications to which data from their sensors have been used. The marked difference between the first and second generation Landsat satellites was the development of the TM sensor (Table 1). The TM differs from the earlier MSS system in many respects. The major changes include an improvement in spacial reso- b Figure 3. A comparison of the spatial resolution of MSS (a) and TM (b). Note the clarity by which gully networks are visible on the TM image (both images are near infra-red and 512 x 512 pixels).

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