Results 121 to 130 of about 151,959 (279)
تحقيقات جغرافيايی, 2019 Aims & Backgrounds: Considering the fact that a large part of our country is in arid and semi-arid regions and every year wind erosion and dust storms cause significant damages to the countrychr('39')s bio-economic resources, it is necessary to study ...
Malihe Mohamadnia +2 more
doaj
People and Nature, EarlyView.Abstract Hydropower dams regulate water flows for millions of downstream inhabitants worldwide, altering water availability. Under a changing climate, flow control is often framed technically and politically as being essential for reducing drought and flood risks. However, it can also disrupt ecological flows, impact livelihoods and erode environmental
Laura Betancur‐Alarcón +4 more
wiley +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Across circumpolar permafrost regions, climate change is destabilizing ice‐rich hillslopes, increasing the frequency and magnitude of thaw‐driven mass wasting. This paper reviews recent studies (2013–2024) on thaw‐driven mass wasting, focusing on the processes, morphology and trajectories of geomorphic change and their implications for ...
J. M. Young +5 more
wiley +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT The amount and stratigraphic setting of ground ice in permafrost slopes is a key control on the style and magnitude of permafrost mass wasting. Understanding the spatial and stratigraphic variations in ground ice distribution on permafrost slopes is therefore a fundamental property in assessing the stability of permafrost hillslopes.
Joseph M. Young +2 more
wiley +1 more source
Landslide Hazard Zoning in Bijar Town Using Analytical Hierarchy Method (AHP) [PDF]
نشریه جغرافیا و برنامهریزی, 2015 Landslides and mountainside instabilities are major dangers for human activities which often cause the waste of economic resources and damage to properties and installations. These dangers occur in natural slopes or in slopes changed by man.
Musa Abedini, Bahareh Ghasemyan
doaj
Impacts of a Century‐Old Urban Dam on Water Quality and Habitat Composition, Flint River, Flint, MI
River Research and Applications, EarlyView.ABSTRACT Dams significantly influence river ecosystems worldwide, fragmenting habitats, altering sediment transport, and reducing biodiversity. Urban rivers are especially vulnerable, where dams compound stressors such as channelization, pollution, and degraded riparian zones. In response, dam removals are a growing restoration tool globally.
Chloe J. Summers, Heather A. Dawson
wiley +1 more source
River Research and Applications, EarlyView.ABSTRACT The pattern of flow or hydrological connection between a river's main channel and its floodplain can vary seasonally and spatially in frequency, duration, direction, and magnitude. Such variation is expected to promote habitat and biotic diversity.
Jarrod R. Sackreiter +3 more
wiley +1 more source
Making Waves: The Effects of Whitewater Parks on Fish Passage in Colorado
River Research and Applications, EarlyView.ABSTRACT Instream structures have fragmented riverine habitats throughout much of the world, including the Western USA. Whitewater parks (WWPs) are relatively new instream structures designed to create hydraulic waves for recreational boating and surfing by constricting flows into a steep chute or drop.
Eric E. Richer +5 more
wiley +1 more source
Andrean examples of mega-geomorphology themes [PDF]
Geomorphic (or physiographic) provinces have been a well known and useful method of regional landform classification for a century. Every earth scientist will recognize a phrase such as Appalachian Plateau or Southern Rocky Mountains as defining a ...
Bloom, A. L.
core +1 more source
Evaluating the Interpretation Uncertainty From the Manual Streambank Delineation
River Research and Applications, EarlyView.ABSTRACT Streambank delineation enables the development of two important parameters: streambank position and channel width. For older aerial images that cannot be easily processed by automatic methods, manual interpretation of streambanks is a necessary task.
Megan M. Carr +2 more
wiley +1 more source