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Automatic detection and delineation of karst terrain depressions and its application in geomorphological mapping and morphometric analysis [PDF]

open access: yesActa Carsologica, 2013
Digital elevation models (DEM) are digital representations of topography that are especially suitable for numerical terrain analysis in earth sciences and engineering. One of the main quantitative uses of DEM is the automatic delineation of flow networks
Eulogio Pardo-Igúzquiza   +2 more
doaj   +5 more sources

Computing water flow through complex landscapes – Part 2: Finding hierarchies in depressions and morphological segmentations [PDF]

open access: yesEarth Surface Dynamics, 2020
Depressions – inwardly draining regions of digital elevation models – present difficulties for terrain analysis and hydrological modeling. Analogous “depressions” also arise in image processing and morphological segmentation, where they may represent ...
R. Barnes   +5 more
doaj   +2 more sources

Review on algorithms of dealing with depressions in grid DEM

open access: yesAnnals of GIS, 2019
Depressions in grid digital elevation models (DEMs) need to be dealt with before the topographic attributes (such as specific catchment area) and terrain features (such as drainage networks) related to flow directions can be derived from DEMs in a ...
Yi-Jie Wang, Cheng-Zhi Qin, A-Xing Zhu
doaj   +2 more sources

Adiabatic westward drift of Indian monsoon depressions

open access: yesQuarterly Journal of the Royal Meteorological Society, 2015
A large fraction of the rain received by continental India is produced by cyclonic vortices with outer radii of about 1000 km that are contained within the larger scale South Asian monsoon flow.
William R Boos, John V Hurley
exaly   +2 more sources

Periodically inundated uvalas and collapse dolines of Upper Pivka, Slovenia [PDF]

open access: yesActa Geographica Slovenica, 2020
Within the area of Upper Pivka there is a number of intermittent lakes because of oscillation of water table level close to the surface i.e. shallow karst.
Uroš Stepišnik, Petra Gostinčar
doaj   +3 more sources

The spatiotemporal structure of precipitation in Indian monsoon depressions

open access: yesQuarterly Journal of the Royal Meteorological Society, 2016
Indian monsoon depressions are synoptic‐scale events typically spun up in the Bay of Bengal. They usually last 4–6 days, during which they propagate northwestward across the Indian subcontinent before dissipating over northwest India or Pakistan.
Andrew G Turner, Kieran M R Hunt
exaly   +2 more sources

Power law scaling of topographic depressions and their hydrologic connectivity

open access: yesGeophysical Research Letters, 2014
Topographic depressions, areas of no lateral surface flow, are ubiquitous characteristics of the land surface that control many ecosystem and biogeochemical processes.
Phong V V Le, Praveen Kumar
exaly   +2 more sources

The Debt-Deflation Theory of Great Depressions: On Irving Fisher’s Use of Medical Metaphors

open access: yesŒconomia, 2013
Fisher’s early 1930s “debt-deflation theory of depressions” is characterized by one central epistemic feature: the role held by medical analogies throughout the description and analysis of economic booms and depressions—, both as epistemic analogy ...
Annie L. Cot
doaj   +2 more sources

Has the number of Indian summer monsoon depressions decreased over the last 30 years?

open access: yesGeophysical Research Letters, 2014
Monsoon depressions are cyclonic atmospheric vortices with outer radii near 1000 km that form within the larger‐scale monsoon circulations of India and other regions. Recent studies have reported a downward trend in recent decades in the number of Indian
William R Boos, Farzad Kobarfard
exaly   +2 more sources

‘Hardcastle Hollows’ in loess landforms: Closed depressions in aeolian landscapes – in a geoheritage context

open access: yesOpen Geosciences, 2018
Loess landscapes sometimes contain isolated depressed areas, which often appear as lakes. The outline shape (and distribution) of these depressions could be controlled by random processes, particularly if the depressions are caused by loess ...
Ian Smalley
exaly   +2 more sources

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