Showing papers in "Geomorphology in 2007"

TL;DR: In this paper, high-resolution seismic profiling and coring in the southern East China Sea during 2003 and 2004 cruises has revealed an elongated (similar to 800 km) distal subaqueous mud wedge extending from the Yangtze River mouth southward off the Zhejiang and Fujian coasts into the Taiwan Strait.

TL;DR: In this paper, an iterative procedure that implements the classification of continuous topography as a problem in digital image-processing automatically divides an area into categories of surface form; three taxonomic criteria, slope gradient, local convexity, and surface texture, are calculated from a square-grid digital elevation model (DEM).

TL;DR: In this article, the effects of hydropower dams and reservoirs on the Mekong River basin were investigated. And the theoretical trapping efficiency of the proposed dams has been computed and the amount of sediment to be trapped in the reservoirs estimated.

TL;DR: In this paper, the authors review the theoretical basis for modelling floodplain flow with simplified hydraulic treatments based on a dimensional analysis of the one-dimensional shallow water equations and then review how such schemes can be applied in practice and consider issues of space discretization, time discretisation and model parameterisation, before going on to consider model assessment procedures.

TL;DR: In this paper, the first author was financially supported by an I3P postdoc contract CSIC-CE and a Ramon y Cajal contract from the Education and Science Ministry (Spain).

TL;DR: In this article, the authors presented a procedure to identify the best variables for landslide susceptibility assessment through a bivariate technique (weights of evidence, WOE) and discussed the best way to minimize conditional independence (CI) between the predictive variables.

TL;DR: In this paper, a GIS-based model for the assessment of the landslide susceptibility in a selected area of the Jurassic escarpment in the Swabian Alb (SW-Germany) is described, using the weights-of-evidence method.

TL;DR: In this paper, the root tensile strength of three autochthonous shrub species commonly growing on stiff clay soils of the Northern Italian Apennines, Rosa canina (L), Inula viscosa (L.) and Spartium junceum (L.), were measured by means of field and laboratory tests.

TL;DR: In this paper, the authors examined the impact of climate warming on precipitation distribution in the Yangtze River Basin and found that the observed trends in precipitation and rainstorms are possibly caused by variations of atmospheric circulation (weakened summer monsoon) under climate warming.

TL;DR: In this paper, a generic approach to analysis of landscape (dis)connectivity using slope threshold analysis in GIS, tied to air photograph interpretation and field mapping of buffers and barriers, is tested in the upper Hunter catchment, Australia.

TL;DR: The recent upsurge in research attention to aeolian dust has shown that dust transport systems operate on very large spatial and temporal scales, and involve much larger quantities of sediment than was previously realized.

TL;DR: In this article, the authors illustrate the sweeping shift from template explanations to self-organization by discussing four nearshore patterns: beach cusps, surfzone crescentic sandbars, inner-shelf sorted bedforms, and large-scale cuspate shorelines.

TL;DR: In this paper, single and paired cosmogenic nuclide (10 Be, 26 Al and 21 Ne) derived erosion rates and exposure ages on hillslope interfluves from the tectonically active western central Andes that show a distinct spatial variation.

TL;DR: In this article, a framework for the interdisciplinary study of river ecosystems is presented, which presents parallel hierarchies in the geomorphology, hydrology and ecology of a river with different organizational elements and levels of organization for each discipline.

TL;DR: In this article, a model of river avulsion is proposed that emphasizes simplicity, self-organization, and unprogrammed behavior rather than detailed simulation, which is consistent with observations from depositional river systems.

TL;DR: In this paper, the authors define the perfect landscape metaphor as a result of the combined, interacting effects of multiple environmental controls and forcings to produce an outcome that is highly improbable, in the sense of the likelihood of duplication at any other place or time.

TL;DR: In this article, a top-down approach based on emergent variables and interactions is used for modeling a multi-scale system, rather than explicitly focusing on the much faster and smaller scale processes that give rise to them.

TL;DR: In this article, the Madre de Dios River, a tributary of the Amazon River in Peru, was analyzed using data from the Landsat ETM+ (optical multispectral), JERS-1 (L-band radar), and the Shuttle Radar Topography Mission (C-band interferometric Digital Elevation Models).

TL;DR: In this paper, a study of the Ganga River sediments for their textural properties, grainsize characteristics, and transportation dynamics is presented, where a suite of recently deposited sediments (189 bedload samples and 27 suspended load samples) of the river and its tributaries was collected from 63 locations.

TL;DR: In this paper, the authors used landslides triggered by a major earthquake and a typhoon prior to the earthquake to develop an earthquake-induced model and a Typhoon-triggered model.

TL;DR: In this paper, the relationship between soil organic carbon (SOC) and soil redistribution patterns on agricultural landscapes was investigated using the fallout 137Cesium technique in three tilled agricultural fields.

TL;DR: In this paper, the authors identified a relation between the degree of soil development and the process type that generated debris flows and found that areas with greater soil development were less likely to generate runoff and therefore less likely of generate debris flows by the firehose effect or by rilling.

TL;DR: In this article, a cellular automata-based model is proposed to simulate and investigate reach-scale alluvial dynamics within a landscape evolution model, whereby the continued iteration of a series of local process "rules" governs the behaviour of the entire system.

TL;DR: In this paper, a preliminary dynamical analysis of landscapes and humans as hierarchical complex systems suggests that strong coupling between the two that spreads to become regionally or globally pervasive should be focused at multi-year to decadal time scales.

TL;DR: The role of fluvial erosion in sculpting the early Martian landscape is explored in this article using a simulation model that incorporates formation of impact craters, erosion by fluvic and slope processes, deposition in basins, and flow routing through depressions.

TL;DR: In this paper, an Artificial Neural Network (ANN) was used to model the monthly suspended sediment flux in the Longchuanjiang River, the Upper Yangtze Catchment, China.

TL;DR: In this article, a method for delineating lahar-hazard zones in volcanic valleys is adapted to debris flows by combining a scaling analysis of lahar kinematics with the statistical analysis of data for 27 historical lahars.

TL;DR: In this paper, the authors discuss the importance of scale in geomorphic and ecological research, and compare and contrast disciplinary biases and inclinations, and highlight the problem of conflicting spatial scales.

TL;DR: In this paper, the authors examined data from rivers around the world for further evidence of autogenic, self-organised or non-linear behaviour through analysis of change in sinuosity over time for reaches and change in individual bend form, particularly bend curvature and bend elongation.

TL;DR: In this paper, three types of fine sediment signatures (radionuclides, mineral magnetism and sediment geochemistry) were used to trace the origins of fine particulate sediment accumulating in two reservoirs that were constructed around the mid 1930s.