Showing papers in "Geomorphology in 2012"

TL;DR: The Structure-from-Motion (SfM) method as mentioned in this paper solves the camera pose and scene geometry simultaneously and automatically, using a highly redundant bundle adjustment based on matching features in multiple overlapping, offset images.

TL;DR: In this article, the authors evaluate the mapping power of SVM modeling in earthquake triggered landslide-susceptibility mapping for a section of the Jianjiang River watershed using a Geographic Information System (GIS) software.

TL;DR: In this article, the state-of-the-art for a typical digital terrain modeling workflow that starts with data capture, continues with data preprocessing and DEM generation, and concludes with the calculation of one or more primary and secondary land surface parameters.

TL;DR: This article reviewed the approaches taken for researching paraglacial rock slope failure patterns and processes, summarised the spatial and temporal patterns of postglacial failures, and assessed the factors influencing slope stability during glaciation and deglaciation.

TL;DR: In this paper, the definition and subdivision of the land surface from Digital Elevation Models (DEMs) is considered, and the applicability of "fuzzy" boundaries is discussed.

TL;DR: In the floodplain large-wood cycle as mentioned in this paper, pieces of wood large enough to resist fluvial transport and remain in river channels initiate and stabilize wood jams, which in turn create alluvial patches and protect them from erosion.

TL;DR: In this article, two back-propagation training algorithms, Levenberg-Marquardt and Bayesian regularization, were utilized to determine synoptic weights using a training dataset.

TL;DR: In this paper, a catalogue of 442 rainfall events with landslides in the Abruzzo, Marche, and Umbria regions, central Italy, between February 2002 and August 2010 was compiled, and the duration D (in hours) and the cumulated (total) event rainfall E (in mm) using rainfall measurements obtained from a dense network of 150 rain gauges.

TL;DR: In this article, the authors present a review of methods of geomorphic change detection based on gridded models, which can be applied to a wide range of time periods by utilizing cartometric, remote sensing, or ground-based topographic survey data to measure volumetric change.

TL;DR: Geomorphological mapping plays an essential role in understanding Earth surface processes, geochronology, natural resources, natural hazards and landscape evolution as discussed by the authors, which involves the partitioning of the terrain into conceptual spatial entities based upon criteria that include morphology (form), genetics (process), composition and structure, chronology, environmental system associations (land cover, soils, ecology), as well as spatial topological relationships of surface features (landforms).

TL;DR: In this paper, a total of 20 debris flows are described in the Wenchuan area in SW China; all were triggered by heavy rainfall on 13th of August 2010, and the debris flows in the area were initiated by run-off erosion on co-seismic landslide material, and concentrated erosion of landslide debris in steep channels; new landslides that transform into debris flows.

TL;DR: In this article, the effect of physical and biological crusts on soil surface roughness and their influence on runoff and erosion was investigated, and the best relationship between microtopography and runoff on biologically crusted soils was found for surface storage capacity, which appears as a powerful predictor of the runoff coefficient on long temporal scales.

TL;DR: An object-based method to automatically classify topography from SRTM data relies on the concept of decomposing land-surface complexity into more homogeneous domains and indicates that most of classes satisfy the regionalization requirements of maximizing internal homogeneity while minimizing external homogeneity.

TL;DR: In this article, a general classification system for coal fires is presented based on more than a decade of experience with in situ mapping of coal fire areas worldwide, and coal seam fire geomorphology is explained in detail.

TL;DR: A detailed analysis of existing national landslide databases in the EU member states, EU official candidate and potential candidate countries and EFTA countries, and their possible use for landslide zoning is presented in this article, and a flow chart is presented that classifies European countries by ability to perform national scale landslide susceptibility, hazard and risk analyses.

TL;DR: In this paper, the authors evaluated four metrics to define the spatially variable (regionalised) hillslope sediment delivery ratio (HSDR) in a catchment model that accounts for gully and streambank erosion and floodplain deposition.

TL;DR: In this paper, the authors apply the newly developed Fluvial Information System which integrates a suite of cutting edge, high-resolution, remote sensing methods in a spatially explicit framework.

TL;DR: In this paper, the authors evaluated the effect of scale on runoff and soil erosion in the Loess Plateau, China, and found that the runoff coefficient decreased with increasing plot area, but gently increased with a shorter restoration time.

TL;DR: The Bank Stability and Toe Erosion Model (BSTEM) was developed in order to predict streambank retreat due to both fluvial erosion and geotechnical failure as discussed by the authors.

TL;DR: In this paper, the authors present data on gully head retreat rates in Northern Ethiopia and relate these rates to gully and environmental characteristics, and express the positive effects of recent soil and water conservation practices on stabilizing gully stabilization.

TL;DR: In this paper, the potential of object-oriented analysis (OOA) using only single-pulse LiDAR derivatives, such as slope gradient, roughness and curvature, to map landslides is investigated.

TL;DR: In this article, the authors quantified the sediment volume transported by a major debris flow event in the Halltal, Austrian Alps, using a combination of terrestrial (TLS) and airborne laser scanning (ALS).

TL;DR: In this paper, the authors synthesize existing data from central Idaho to explore how sediment yields are likely to respond to climate change in semi-arid basins influenced by wildfire, the potential consequences for aquatic habitat and water resource infrastructure, and the prospects for mitigating sediment yields in forest basins.

TL;DR: This paper examined longitudinal changes in sediment grain size along the middle and lower Yangtze River, downstream of the Three Gorges Dam (TGD), and along the major sediment dispersal pathway into the East China Sea, over a total length of 2100 km.

TL;DR: In this paper, the authors studied the long-term evolution of the Tagliamento River, a large gravel-bed river in northeastern Italy, and argued that the longterm channel evolution was driven mainly by human intervention at the reach scale (i.e., sediment mining and channelization).

TL;DR: In this paper, a Compound Specific Stable Isotope (CSSI) sediment tracing approach is evaluated for the first time in an agricultural catchment setting against established geochemical fingerprinting techniques.

TL;DR: In this article, the authors present a new approach that calculates rates of river meander migration using physically-based streambank erosion formulations, which can capture the complex long-term migration patterns of natural channels which cannot be merely predicted from hydrodynamics only.

TL;DR: In this article, the authors present a methodology for the morphometric characterization of volcanic edifices using a digital elevation model (DEM) and its derived products (slope, curvature) to extract a coherent set of morphometric parameters for a given volcanic edifice.

TL;DR: Wang et al. as mentioned in this paper examined the interactions between gully development and tunnel erosion in the hilly Loess Plateau region of northern China, and found that tunnel formation is intricately affect- ed by topographic conditions, land uses, knickpoint distribution, soil materials and mass movements.

TL;DR: In this paper, the authors describe the sediment patterns formed in a sand bed around circular patches of rigid vertical cylinders, representing a patch of reedy emergent vegetation, and explain the differences between the sparse and dense patch patterns of deposition.