Results 61 to 70 of about 13,785 (218)

Mesoscale mapping of sediment source hotspots for dam sediment management in data-sparse semi-arid catchments [PDF]

, 2020
Land degradation and water availability in semi-arid regions are interdependent challenges for management that are influenced by climatic and anthropogenic changes.
Gholami, Faraz Rabei, Mousavi, Maryam, Müller, Anne, Smetanová, Anna, Suleiman, Mohamed A., Zargar, Morteza   +5 more
core   +1 more source

High‐Resolution Channel Geometry Reveals Contrasting Styles of Gravel River Adjustment

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Rivers self‐organize to convey water and sediment, giving rise to robust downstream scaling between channel geometry and drainage area, underpinning landscape evolution models. However, these relations rely on limited observations per watershed. We quantify downstream changes in channel slope and bankfull width for six gravel rivers.
Robert P. Kostynick, Colin B. Phillips, Claire C. Masteller   +2 more
wiley   +1 more source

Responses of Stream Geomorphic Indices to Piedmont Fault Activity in the Northern Segment of the Red River Fault Zone

Remote Sensing, 2023
Based on a digital elevation model (DEM) and GIS technology, we extracted and analyzed stream geomorphic indices—such as the slope, relief degree of the land surface (RDLS), hypsometric integral (HI) and channel steepness index (ksn)—of the Cangshan ...
Long Guo, Zhongtai He, Linlin Li
doaj   +1 more source

Automated, objective texture segmentation of multibeam echosounder data - Seafloor survey and substrate maps from James Island to Ozette Lake, Washington Outer Coast [PDF]

, 2007
Without knowledge of basic seafloor characteristics, the ability to address any number of critical marine and/or coastal management issues is diminished. For example, management and conservation of essential fish habitat (EFH), a requirement mandated by
Beaudoin, Jonathan D., Cutter, George R., Intelmann, Steven S.   +2 more
core  

Beyond Water: Mapping Sediment Bars to Enhance Satellite Monitoring of River Dynamics

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Unvegetated sediment bars are central to river morphodynamics but are rarely used as indicators of channel dynamicity in satellite‐based studies. Linking sediment dynamics and river lateral mobility requires monitoring sustained changes in both water and sediment—the active channel (AC)—to avoid stage‐dependent noise.
Martina Cecchetto, Elisa Bozzolan, Andrea Brenna, Diane Doolaeghe, Elia Taffetani, Nicola Surian, Walter Bertoldi, Simone Bizzi   +7 more
wiley   +1 more source

Comparative geospatial and statistical analysis of DEM-derived geomorphic indices from multiple datasets for assessing relative active tectonics

Geomatics, Natural Hazards & Risk
Tectonic activity plays a vital role in achieving sustainable land management and hazard mitigation in seismically active regions. This study evaluates geomorphic indices derived from four digital elevation models (DEMs), including SRTM, Copernicus, FAB,
Ahmed Gad, Heba El-Bagoury, Alaa Ahmed, Osman Abdelghany, Abdelnasser R. Abuzied   +4 more
doaj   +1 more source

Relative tectonic activity assessment of the Çameli Basin, Western Anatolia, using geomorphic indices [PDF]

Geodinamica Acta, 2016
Western Anatolia is one of the world’s most seismically active regions. A nearly N–S-oriented extension caused the formation of E–W- and NE–SW-trending major grabens, creating the potential for earthquakes with magnitudes ≥ 5. The fault segments of the NE-trending Cameli Basin were evaluated using geomorphic indices, common tools for assessment of ...
openaire   +2 more sources

Ephemeropteran and Trichopteran Assemblages Vary Across a Subtropical Rainforest Altitudinal Gradient: Useful Indicators for Climate Change

Ecology and Evolution, Volume 16, Issue 2, February 2026.
This figure provides the elevation distribution of Trichoptera and Ephemeroptera across the elevational gradient and clearly shows how specific morphospecies can be used as indicators. ABSTRACT The subtropical rainforests of eastern Australia are expected to be greatly affected by climate change, with several studies predicting an upward shift in ...
D. Pagotto, C. Burwell, K. Turlington, F. Sheldon   +3 more
wiley   +1 more source

Stable carbon isotopes as indicators for micro-geomorphic changes in palsa peats [PDF]

, 2011
Abstract. Palsa peats are unique northern ecosystems formed under an arctic climate and characterized by an unique biodiversity and ecology. The stability of the palsas are seriously threatened by climate warming which will change the permafrost dynamic and results in degradation of the mires.
Alewell, C., Giesler, R., Klaminder, J., Leifeld, J., Rollog, M.   +4 more
openaire   +3 more sources

Detecting and modeling topography‐induced differences in plant productivity across a grassland ecosystem gradient

Ecosphere, Volume 17, Issue 2, February 2026.
Abstract Understanding spatial variation in grassland productivity is critical for ecological modeling and management. The Great Plains of North America, a vast grassland region east of the Rocky Mountains, exhibits strong gradients in aboveground net primary production (ANPP) linked to precipitation and finer scale topoedaphic variation.
Johny Arteaga, Melannie D. Hartman, William J. Parton, Yushu Xia, Jiaming Duan, Mitchell B. Stephenson, Jerry Volesky, Maosi Chen, Darrin Sharp, Jonathan Straube, Wei Gao   +10 more
wiley   +1 more source