Multi-stream order analyses in basin asymmetry: A tool to discriminate the influence of neotectonics in fluvial landscape development (Madrid Basin, Central Spain)

Garrote, Julio; Heydt, Guillermina Garzón; Cox, Randel Tom

doi:10.1016/j.geomorph.2007.07.023

Cited by 59 publications

(38 citation statements)

References 34 publications

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“…This equation is useful for estimating local landslide potential and thus hazard assessment. The symmetry factor (T) is a good index for demonstrating the stream deviations, as the stream suffers from lateral migration due to the influence of tectonic [37,[42][43][44]. The main difference between river offset triggered by a landslide and a tilted basin is that the river offset induced by landslide is local, while in the tectonically tilted basin, the entire basin midline is shifted, regardless of the direction of the river offset.…”

Section: Discussionmentioning

confidence: 99%

River Courses Affected by Landslides and Implications for Hazard Assessment: A High Resolution Remote Sensing Case Study in NE Iraq–W Iran

Othman

Gloaguen

2013

Remote Sensing

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Abstract:The objective of this study is to understand the effect of landslides on the drainage network within the area of interest. We thus test the potential of rivers to record the intensity of landslides that affected their courses. The study area is located within the Zagros orogenic belt along the border between Iraq and Iran. We identified 280 landslides through nine QuickBird scenes using visual photo-interpretation. The total landslide area of 40.05 km 2 and their distribution follows a NW-SE trend due to the tectonic control of main thrust faults. We observe a strong control of the landslides on the river course. We quantify the relationship between riverbed displacement and mass wasting occurrences using landslide sizes versus river offset and hypsometric integrals. Many valleys and river channels are curved around the toe of landslides, thus producing an offset of the stream which increases with the landslide area. The river offsets were quantified using two geomorphic indices: the river with respect to the basin midline (F b ); and the offset from the main river direction (F d ). Hypsometry and stream offset seem to be correlated. In addition; the analysis of selected river courses may give some information on the sizes of the past landslide events and therefore contribute to the hazard assessment.

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Section: Discussionmentioning

confidence: 99%

River Courses Affected by Landslides and Implications for Hazard Assessment: A High Resolution Remote Sensing Case Study in NE Iraq–W Iran

Othman

Gloaguen

2013

Remote Sensing

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“…These surfaces are treated as simplified terrain elevation models for the study area (Grohmann, 2005;Garrote et al, 2008). The best-fit trend surface is the 11th-order polynomial surface (Table 3).…”

Section: Trend Surface Analysismentioning

confidence: 99%

“…Trend surface analysis (TSA) is a procedure to derive a continuous smooth surface from irregular data to isolate regional trends from local variations (Grohmann, 2005;Garrote et al, 2008). TSA is appropriate for regional data such as delineating an ancient, dissected erosional surface or the paleoflow direction of a good-sized watershed.…”

Section: Introductionmentioning

confidence: 99%

Appraisal of active tectonics using DEM-based hypsometric integral and trend surface analysis in Emilia-Romagna Apennines, northern Italy

Siddiqui¹,

Soldati²

2014

Turkish J Earth Sci

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The hypsometric integral (HI) has generally been used to explain the stages of landscape evolution and erosional processes. It is an important tool to investigate tectonics and lithologic and climatic effects on topographic change. We analyzed the significance of the HI to investigate active tectonics in the Emilia-Romagna Apennines of northern Italy. We used a digital elevation model of 5-m spatial resolution to calculate grid-based HI values. The HI distribution does not show clear spatial patterns of high and low HI values. However, when statistical methods of local indices of spatial autocorrelation were applied, it was possible to identify clear clusters of high and low HI values. Trend surface analysis (TSA) was carried out to distinguish areas with anomalously high and low elevations, and to observe their spatial correlation with the HI and regional geological structures. The results indicate that the high HI values and TSA anomalies are positively correlated with the areas of high tectonic activity and along the regional tectonic structures

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“…There are debris cones formed at the bottom of the rockwall made up of mixture of debris from the Lower, Medium and Upper Units. The escarpment, 70 meters high and 500 meters wide, was created by reactivation of Variscan faults during the Alpine orogeny [8], which have determined the direction of the rockwall (SW-NE) as well as the Tajuña river valley (that gives name to the nearest village), located in its center. …”

Section: Geological Settingmentioning

confidence: 99%

Gypsum Decay Simulation: Risco de las Cuevas Case Study, Madrid, Spain

Freire-Lista

Greif

Buergo

et al. 2014

Engineering Geology for Society and Territory - Volume 8

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Since troglodyte population has excavated their dwellings in the gypsum escarpment of the Risco de las Cuevas of Perales de Tajuña (Spain), atmospheric processes have preferentially sculptured the rockwall. This weathering has a negative effect on the future of the monument, and to preserve it, it is important to investigate how the different content of clay in the gypsum that constitute the escarpment, respond to the weathering.Three types of gypsum, with different amounts of clay, material that constitute El Risco de las Cuevas, were subjected to accelerated ageing tests in laboratory (freezing/thawing and wetting/drying).In addition to laboratory observations, results from field observations and digital photogrammetry were obtained, serving to draw the geometry of the escarpment, comparing with old photographs, taken by neighbors of the village of Perales de Tajuña, in which images of the detached tape bock of gypsum can be seen, their dimensions and volume. All artificial accelerated ageing tests have leaded to gypsum caused decay, being the most aggressive the resistance to freezing in the gypsum specimens with the highest clay content.

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Multi-stream order analyses in basin asymmetry: A tool to discriminate the influence of neotectonics in fluvial landscape development (Madrid Basin, Central Spain)

Cited by 59 publications

References 34 publications

River Courses Affected by Landslides and Implications for Hazard Assessment: A High Resolution Remote Sensing Case Study in NE Iraq–W Iran

River Courses Affected by Landslides and Implications for Hazard Assessment: A High Resolution Remote Sensing Case Study in NE Iraq–W Iran

Appraisal of active tectonics using DEM-based hypsometric integral and trend surface analysis in Emilia-Romagna Apennines, northern Italy

Gypsum Decay Simulation: Risco de las Cuevas Case Study, Madrid, Spain

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