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:: 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:: 7 Human settlements: Urban surveys, human settlement analysis and archaeology. Chairman: W. G. Collins, Co-chairman: B. C. Forster, Liaison: P. Hofstee

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Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Application of physiographic photo interpretation technique to analyse the enigmatic drainage problem of the Hyderabad Metropolitan Region, Pakistan. M. N. Syal, I. E. Schneider

Document type:: Multivolume work

Structure type:: Chapter

ly of Thailand: Digest, Vol. IV, along moate and Vol. 3, p. 12-38 Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 Application of physiographic photo interpretation technique to analyse the enigmatic drainage problem of the Hyderabad Metropolitan Region, Pakistan restrospect: An Chicago, Rand- 85 , Place names ;o Thai history, ch Project on Drn University, William-Hunt's to. 93, p.35-36. 1972. The need :nt sites for northeastern Studies , Kyoto The patterns of Phraya Plain, nal, Geograph. No.3, p.53-56 relation of old of Thailand. First Symposium iry Geology of '1. Thiramongkol in Thailand: 5 system. Non ject on ancient rersity Bangkok. o Phraya Ruang: ~iod. Presented urn of Kamphaeng nd, 3 3 page s Ancient cities , Thailand: The >rmer shorelines, rical Geography ig. Section 9, Ukita, Japan. duction to the lir. Journal of -t 2, p.86-110. ~ earthworks in iquity , Vol. 24, M.N.Syal Soil Survey of Pakistan, Lahore I.E.Schneider EMPLASA, Sao Paulo, Brazil ABSTRACT: The Hyderabad Metropolitan Region is represented by flat Rocky Plateaus, Flood Plains and Piedmont Plans situated along the Indus River. Under natural conditions, the region has quite suitable physical environments for urban expansion and for maintenance of existing civic infrastructure. But as a result of population implosion and lack of proper urban planning, the region's natural drainage has been subjected to progressive deterioration in the past. The present situation has become quite alarming, but the development strategies are not yet attuned according to the natural lay of land. Apparently, the drainage conditions have become enigmatic for the planners. In order to give a scientific solution for the drainage problem, the physiographic technique of aerial photograhic interpretation was employed. Causes of drainage deterioration were correlated with physiographic processes. The rate of deterioration was qualitatively determined by comparing the interpretation results of two sets of aerial photographs taken with a time interval of 23 years. It was observed that the spatial growth and the degree of deterioration could precisely be attributed to the technically fragile physiographic positions. This experience was used to predict the behaviour of similar site conditions observed elsewhere in the region. 1 INTRODUCTION This study represents a practical application of physio graphic aerial photo interpretation technique to deter mine clues for soil drainage deterioration in the Hyderabad Metropolitan Region, for which a compre hensive Master Plan is under preparation (PEPAC, 1986). It was carried out to assist the Hyderabad Development Authority, the planning and execution agency for the region. The objective is to highlight the principal physical factors affecting drainage conditions. The study predicts the behaviour of available areas for urban expansion based on the performance of similar site and material conditions existing in the areas already under use. Further it is aimed at provid ing proposals for recovery and optimal utilization of affected areas. The contribution of Physical factors towards drainage deterioration needs quantitative veri fication based on spatial distribution of the problem areas. The description of the region enumerates its physical characteristics employed during the process of physio graphic photo interpretation. Most of these were studied during Reconnaissance Soil Surveys of the adjoining regions (Beg etal., 1970 and Mushtaq Ahmad etal., 1971). The magnitude of the present drainage conditions was largely drawn from the later studies (WAPDA, 1979). 2 THE REGION The region has certain peculiar physical environments which, one way or the other, characterize the sequen tial deterioration of drainage conditions. The following are the relevant components. 2.1 Spatial setting An area of about 100 square kilometers occurring along the flanks of the Indus River below Kotri Barrage and falling between 68° 15' - 68° 30' E and 25° 15' - 25° 30' N, represents the Hyderabad Metropolitan Region with a population of nearly one million people (Government of Pakistan, 1980). The region is bounded in the north and east by a system of three parallel canals i.e. Lined Channel, Pinyari and Fulleli, taking off from the river, upstream of the barrage located on the north boundary of the region. The southern boundary runs across the Ganjo Takkar rock outcrops and the confluence of Baren steam and the Indus River. In the west the region's boundary roughly demarcates the watershed of western rock plains. The region includes three well-connected sister towns: old Hyderabad city situated at the lest bank and Kotri and Jamshoro towns at the right bank of the river. It is situated at a distance of about 160 K.M. from Karachi, the largest city of Pakistan and has good communication linkages with it. The junction of two national arterial roads running along either sides of the Indus is also located within the region. The level parts of the Flood Plan are used for intensive agriculture except for the parts which are salt-affected. The salt-free areas have a very high agricultural value. The saline flats, basins and channel remnants are unused and serve as recipient sites for runoff and uncontrolled effluent from the adjoining areas. The land price of these area is low and hence returns high income to the land speculators. The Rock outcrops, Rock Plains and Piedmont Aprons are generally used for poor grazing. The land price of these landscapes is very low because of their location being away from the city infrastructure. The river attains deltaic character in the region and its course has been properly trained by construction of earthen embankments on either side. As a result of continuous sedimentation by the river on areas falling between the embankments, the river course lies at a somewhat higher elevation than the adjacent Flood Plains. Consequently it appears that the river course is located on a sort of extensive ridge. 2.2 Climate The climate of the region is subtropical semi-desert type (Ahmad, 1951). It is characterized by low but highly erratic rainfall, very dry season for larger part of the year and larger diurnal and seasonal fluctuation of temperatures. The region lies in the rain shadow area. The mean annual rainfall is about 130 mm which is mainly received during the short rainy season of about 10 days during July and August. Though the average rainfall is low, the region receives high rainfall occasionally when 120-250 mm of precipitation may

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