Description of arid geomorphic features using landsat-TM data and ground truth information (WADI FATIMA, Kingdom of Saudi Arabia)

Alwash, M. A.; Zaidi, Syed; Terhalle, U.

doi:10.1016/0341-8162(86)90003-2

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…35,36]. In spite of recent developments in satellite sensor technology, Landsat remains a significant resource for geomorphologists due to its repeat coverage, large scene size and low cost [37].…”

Section: Data Acquisition and Processingmentioning

confidence: 99%

Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran)

2010

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This paper presents a multidisciplinary approach for studying the evolution of an alluvial fan system in Lower Khuzestan (SW Iran). The study draws on previously collected data from geological and archaeological field campaigns and new data derived from the interpretation of satellite imagery and historical textual sources. Three alluvial fans were identified, successively deposited by the Jarrahi river in progressively downstream/westward direction. Judging from archaeological and historical evidence, the successive phases appear to coincide with a relocation of settlement and irrigation activities. The distributary system of the present-day fan developed over a period of less than four centuries. It is suggested that management of levee breaks by man played a key role in such rapid fan development and in maintaining extremely low gradients. Judging from the extensive patterns of ancient irrigation canals, human activity also played an important role in the formation of the earlier fans.

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Section: Data Acquisition and Processingmentioning

confidence: 99%

Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran)

2010

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“…Changes in alluvial surfaces affect the reflectance of objects and patterns on the ground which are consecutively recorded by satellite images. The reflectance of arid geomorphic features was studies in the past mostly using multispectral sensors [2][3][4][5]. In this paper the potential of Landsat ETM+ images to detect temporal and spatial changes of river channels at the terminus of a fluvial system in the Uyuni closed drainage basin in the south west of Bolivia has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Monitoring a river channel network at Salar de Uyuni using Landsat ETM+ images

et al. 2012

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Monitoring and mapping of alluvial surfaces and distal fluvial system has an important role for studying the depositional basin and river behaviour at its terminus. Experiences show rivers in semi-arid areas get smaller through their terminus and create a complex pattern at downstream parts. Remote sensing images can be used to monitor distal fluvial system and reveal changes of channels activity. In this study, we examine the feasibility of mapping and identifying the changes over time of a semi-arid area by Landsat ETM+ images. The study area is at the terminus of a fluvial system in Bolivia. Change detection techniques were applied to emerge the temporal and spatial changes. We used precipitation data of the area for better interpreting the images in different dates. The ETM+ image analysis results show changes in river morphology. It was also observed by the visible bands that the reflectance of abandoned channels increased after several consecutive weeks of high precipitation. The changes in dry seasons are more observable by the infrared bands. The study shows that Landsat ETM+ images in combination with field work data have a good potential to identify temporal and spatial changes at river morphology in a qualitative manner.

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“…Many qualitative and quantitative techniques have been used to differentiate or subdivide sequences of alluvial fan surfaces. The most common techniques include (1) mapping characteristics of a fan surface in the field by describing surface clast size, rock varnish accumulation, desert pavement development, stratigraphic relationships, and evaluation of surface morphology [ Colman and Pierce , ; Wells et al ., ; McFadden et al ., ; Bull , ; Ritter et al ., ; Birkeland , ]; (2) using soil stratigraphy and the relative degree of soil development [ McFadden et al ., ; Bull , ; McDonald et al ., ; Bacon et al ., ]; (3) mapping fan surfaces based on the difference of the surface brightness manifested in aerial or satellite images [ Christenson and Purcell , ; Bull , ]; (4) analysis of remotely sensed multispectral images [ Alwash et al ., ; White , ; Farr and Chadwick , ; Beratan and Anderson , ], multichannel thermal infrared images [ Gillespie et al ., ], hyperspectral images [ Crouvi et al ., ], and radar images [ Kierein‐Young , ]; (5) analysis of digital elevation models [ Frankel and Dolan , ]; and (6) application of cosmogenic age dating techniques to determine the ages of the alluvial deposits and the rates of arid‐region alluvial processes [ Nichols et al ., , 2006; Matmon et al ., ].…”

Section: Introductionmentioning

confidence: 99%

Mapping Quaternary alluvial fans in the southwestern United States based on multiparameter surface roughness of lidar topographic data

2014

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[1] Quaternary alluvial fans have diverse surface morphologies related to both depositional and weathering processes. Numerous studies have demonstrated that the surface expression and morphometry of alluvial fans can be used as an indicator of their relative age of deposition, but only recently has there been an effort to utilize high-resolution topographic data to differentiate alluvial fans by surface age with automated and quantifiable routines. We developed a quantitative model for mapping the relative age of alluvial fan surfaces based on multiparameter surface roughness values computed from 1 m resolution lidar topographic data. Roughness is defined as a function of observational scale and integration of slope, curvature, and aspect topographic parameters. Alluvial fan roughness values were computed across multiple observation scales (3 × 3 m to 150 × 150 m) based on the standard deviation (SD) of slope, curvature (tangential), and aspect topographic parameters. Plots of roughness value versus size of observation scale suggest that the SD of each parameter over a 7 × 7 m observation window best identified the signature of surface roughness elements. Roughness maps derived from slope, curvature, and aspect at this scale were integrated using fuzzy logic. The integrated roughness map was then classified into five relative morphostratigraphic surface age categories (active wash to~400 ka) and statistically compared with a similar fivefold surface age map of alluvial fans developed using traditional field surveys and aerial photographic interpretation. The model correctly predicted the distribution and relative surface age of~61% of alluvial fan landforms based on traditional mapping techniques.

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Description of arid geomorphic features using landsat-TM data and ground truth information (WADI FATIMA, Kingdom of Saudi Arabia)

Cited by 11 publications

References 4 publications

Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran)

Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran)

Monitoring a river channel network at Salar de Uyuni using Landsat ETM+ images

Mapping Quaternary alluvial fans in the southwestern United States based on multiparameter surface roughness of lidar topographic data

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