Journal Article10.1016/0098-3004(91)90048-I
Calculating catchment area with divergent flow based on a regular grid
694
TL;DR: In this paper, a new procedure is described for determining the catchment areas for all cells in a regular elevation grid, a problem of fundamental importance in analyzing drainage patterns, mineral deposition, erosion, and pollution in streams and groundwater.
read more
About: This article is published in Computers & Geosciences. The article was published on 01 Mar 1991. The article focuses on the topics: Water flow & Terrain.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Topographic wetness index predicts the occurrence of bird species in floodplains
TL;DR: In this article, the authors evaluated the ability of TWI to predict the occurrence of grassland passerines and tested different settings to determine which was the best predictor for their dataset.
The multi-scale influence of topography on lava flow morphology
TL;DR: In this paper, the authors developed a lava flow modeling framework that combines spectral analysis of substrate roughness with a new lava flow model (MULTIFLOW), which includes a multiple flow direction routing algorithm in conjunction with a thresholding function that limits the extent of the flow.
Fusing Digital Elevation Maps with Satellite Imagery for Flood Mapping
Marco Stricker,Takashi Miyamoto,Kevin Iselborn,Marlon Nuske,Andreas Dengel +4 more
- 16 Jul 2023
TL;DR: The main contribution lies in the fusion of Digital Elevation Maps (DEMs) with Satellite data, and the effect of several different combinations of processing methods of DEMs, such as depression filling, deriving slope and curvature or flow metrics.
Estimating landscape susceptibility to soil erosion using a GIS-based approach in Northern Ethiopia
TL;DR: In this article, the Revised Universal Soil Loss Equation adjusted for sediment delivery ratio was used in a GIS system to assess landscape sensitivity to erosion and identify hotspots in three catchments with size being 10-20 km2 and results were compared against quantitative and semiquantitative data.
Parallelizing flow-accumulation calculations on graphics processing units-From iterative DEM preprocessing algorithm to recursive multiple-flow-direction algorithm
Cheng-Zhi Qin,Li-Jun Zhan +1 more
TL;DR: The application results show that the proposed parallel approach to calculate flow accumulations on a GPU performs much faster than either sequential algorithms or other parallel GPU-based algorithms based on existing parallelization strategies.
References
•Journal Article
Extracting topographic structure from digital elevation data for geographic information-system analysis
TL;DR: In this paper, software tools have been developed at the U.S. Geological Survey's EROS Data Center to extract topographic structure and to delineate watersheds and overland flow paths from digital elevation models.
2.6K
The extraction of drainage networks from digital elevation data
TL;DR: The method handles artificial pits introduced by data collection systems and extracts only the major drainage paths and its performance appears to be consistent with the visual interpretation of drainage patterns from elevation contours.
2.4K
The extraction of drainage networks from digital elevation data : Computer Vision
J. F. O'callaghan
- 01 Jan 1984
TL;DR: A method is presented for extracting drainage networks from gridded elevation data.
2.4K
A new procedure for gridding elevation and stream line data with automatic removal of spurious pits
TL;DR: In this article, a morphological approach to the interpolation of regular grid digital elevation models (DEMs) from surface specific elevation data points and selected stream lines is described, which has given rise to a computationally efficient interpolation procedure which couples the minimization of a terrain specific roughness penalty with an automatic drainage enforcement algorithm.
1.3K
A contour-based topographic model for hydrological and ecological applications.
TL;DR: A digital model for discretizing three‐dimensional terrain into small irregularly shaped polygons or elements based on contour lines and their orthogonals has wide potential application for representing the three‐dimensionality of natural terrain and water flow processes in the fields of hydrology, sedimentology, and geomorphology.