Results 51 to 60 of about 1,006 (165)

A novel framework for analysing river planform characteristics in data‐scarce regions using remote sensing data

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Using a three‐step framework of data preprocessing, analysis and interpretation, we provide insights into the seasonal and annual pattern of morphological changes, the overall bed form and dynamics and the location of morphological uniform river sections to assess the current morphological river state in data‐scarce regions.
Hannah Schwedhelm, Tobias Siegfried, Roser Casas‐Mulet, Antonia Dallmeier, Nils Rüther   +4 more
wiley   +1 more source

Seasonality, barrage (Farakka) regulated hydrology and flood scenarios of the Ganga River: a study based on MNDWI and simple Gumbel model [PDF]

Modeling Earth Systems and Environment, 2016
The hydrology of the Ganga River is mainly characterized by high monsoon rainfall and seasonal variability in discharge flow. The study is focuses on both the up and down-streams of Farakka barrage. It has been executed with the help of Modified Normalized Difference Water Index using Landsat satellite images (2014), satellite based discharge data and ...
Raghunath Pal, Padmini Pani
openaire   +1 more source

Assessment of the Spatiotemporal Patterns and Ecological Impacts of Photovoltaic Power Plants in Central Asia

Earth's Future, Volume 14, Issue 3, March 2026.
Abstract Photovoltaic (PV) power plants rapidly expand in drylands because of the high solar potential and efficient land‐use capabilities. However, existing PV data sets are often incomplete and lack installation timestamps, which significantly hinder comprehensive assessments of PV power plants' ecological impacts. By integrating a random forest (RF)
Yitong Gao, Qiuli Yang, Peng Chang, Chengxiang Wang, Xuyang Wang, Mengran Yu, Ruoxi Liu, Babierjiang Dilixiati, Qingdong Shi, Yryszhan Zhakypbek   +9 more
wiley   +1 more source

Vulnerability of Key Sea Turtle Nesting Beaches to Future Erosion and Sea Level Rise

Earth's Future, Volume 14, Issue 3, March 2026.
Abstract Threatened sea turtles rely on sandy beaches for nesting, linking their long‐term survival to global beach availability. However, beaches worldwide are increasingly threatened by anthropogenic stressors and sea level rise (SLR). Reliable vulnerability assessments require understanding beach dynamics across multiple time scales, informed by ...
Jakob C. Christiaanse, Sean Vitousek, Ad J. H. M. Reniers, José A. A. Antolínez   +3 more
wiley   +1 more source

Capturing Spatial Gradients of Water Color and Clarity in Subtropical Reservoirs During Drought

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.
Abstract Reservoirs have spatial variation in water depth, suspended matter, and biogeochemistry that can influence patterns of water clarity and color. Spatial surveys with sensor‐equipped boats matched in time with satellite image acquisition provide data‐intensive avenues for understanding spatial patterns of optical properties within reservoirs. We
Malcolm S. Macleod, Nicole D. Wagner, Xiao Yang, Stephen M. Powers   +3 more
wiley   +1 more source

Enhancing flood inundation mapping technique using Landsat-based remote sensing and 2D hydrodynamic modeling: a case study of the Bihar flood caused by the Koshi embankment breach

Frontiers in Remote Sensing
Floods have become more unpredictable and erratic due to the influence of extreme hydroclimatic events. Therefore, obtaining near-real-time, accurate flood inundation maps for such events is essential for effective flood emergency response, which can be ...
Aashutosh Aryal, Rajiv Sinha, Nawa Raj Pradhan, Venkataraman Lakshmi   +3 more
doaj   +1 more source

Impact of Spatial Scale on Optical Earth Observation‐Derived Seasonal Surface Water Extents

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Landsat‐derived products are the most prominent, publicly available sources of large‐scale surface water extent data. However, few studies have assessed the limitations of spatial scale on such products. Here, we mapped seasonal surface water extents utilizing high‐resolution (4.77 m) PlanetScope Basemap imagery and machine learning.
Mollie D. Gaines, Mirela G. Tulbure, Vinicius Perin, Darcy Boast, Henry Castellanos Quiroz, Rebecca Composto, Varun Tiwari, Júlio Caineta   +7 more
wiley   +1 more source

Evaluating the Interpretation Uncertainty From the Manual Streambank Delineation

River Research and Applications, Volume 42, Issue 2, Page 495-506, February 2026.
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, Rosemary Maloney, Lucie Guertault   +2 more
wiley   +1 more source

Automated detection of Yarka island (Baikal lake) based on NDWI, MNDWI and WRI spectral indices

InterCarto InterGIS
The paper presents the results of an automated algorithm designed to detect Yarki Island on satellite imagery and estimate its area utilizing Python-based tools. Employing the developed algorithm for calculating spectral indices—WRI (Water Ratio Index), NDWI (Normalized Difference Water Index), and MNDWI (Modified Normalized Difference Water Index)—we ...
Fedor Andreyev, Ekaterina Sutyrina
openaire   +1 more source

Flow History Effects on River Bifurcation Dynamics in a Himalayan River

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Dynamic gravel bed rivers experience frequent changes in channel position and flow distribution between branches, which can alter the location and extent of flooding. Changes in flow routing can significantly impact livelihoods, habitats and infrastructure in adjacent floodplains. Here, we test whether variations in seasonal discharge patterns
C. Cload, M. J. Creed, E. H. Dingle, L. Quick   +3 more
wiley   +1 more source