Results 81 to 90 of about 6,838 (207)

Propuesta de un Índice de Bofedal para la Teledetección de Bofedales en Cabeceras de Cuenca Usando Datos Imágenes de los Sensores TM, OLI a bordo de los Satélites Landsat - Caso Estudio: Bofedal Chunal, Cuenca Alta del río Chillón

Revista de Investigación de Física, 2020
Esta investigación propone un Índice de Bofedal (IB) para identificar los bofedales, ubicados sobre los 3800 ms.n.m. La propuesta del IB es un resumen de la tesis de maestría de Garcia Dulanto, (2018) y se fundamenta en dos métodos: el primero basado en ...
Jorge García, Jhon Guerrero, Bram Willems, Raul Espinoza   +3 more
doaj   +1 more source

Network‐wide assessment of soil water content calibration and sensitivity to biomass proxies using cosmic‐ray neutron sensing in the Roaring Fork Basin, Colorado

Vadose Zone Journal, Volume 25, Issue 3, May/June 2026.
Abstract Soil water content (SWC) is a key state variable of the climate system but is often uncertain in water balance monitoring, especially in alpine environments. SWC measurements can be challenging in alpine environments due to the topography and rocky soils.
Sophia M. Becker, Gwendolyn E. Davies, Trenton E. Franz, Tyler D. Lampard, Todd G. Caldwell   +4 more
wiley   +1 more source

Urban expansion and wetland shrinkage estimation using QGIS- tool: A Kolkata Case-Study [PDF]

EPJ Web of Conferences
Urban wetlands are important natural reservoirs that help to regulate water cycles, weather and the environment at large in rapidly growing cities. Unfortunately, the fast pace of urban growth has led to the loss of many of these natural habitats.
Bhowmick Akashlina, Chowdhury Sudip, Panja Diptangsu, Kumar Gunjan   +3 more
doaj   +1 more source

Global Environmental Forcing of Coastal Waterline Variability Across Seasonal to Interannual Timescales

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract The position of the coastal waterline—the interface between land and sea—varies over time due to sedimentary and hydrodynamic processes influenced by climate variability. While previous studies have mainly focused on local morphodynamic or storm‐driven shoreline changes, the large‐scale climatic controls on global waterline variability remain ...
Rafael Almar, Julien Boucharel, Gregoire O. Abessolo, Marcan Graffin, Gregoire Thoumyre, Fabrice Papa, Erwin W. J. Bergsma, Edward Anthony, Angelique Melet, Vincent Regard   +9 more
wiley   +1 more source

Modelo área-volume para a Represa Guarapiranga empregando o índice NDWI

, 2020
Dams represent an important source of water for supply purposes of urban areas. The water volume variation stored in these reservoir can be estimated from empirical area-volume relationship, in which the area of the reservoir filled by water can be ...
Caroline Favoreto da Cunha, Sabrina Brandão Cardoso, E. Teramoto, H. K. Chang   +3 more
semanticscholar   +1 more source

FLOOD MONITORING USING NDWI AND MNDWI SPECTRAL INDICES: A CASE STUDY OF AGHQALA FLOOD-2019, GOLESTAN PROVINCE, IRAN

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
. Assessment of changes of water bodies and vegetation by traditional methods is very difficult and costly. The use of satellite data makes it possible to study water bodies and vegetation more accurately and cost effectively.
F. Soltanian, Mozhgan Abbasi, H. Bakhtyari   +2 more
semanticscholar   +1 more source

Reconstruction of River Boundaries at Sub-Pixel Resolution: Estimation and Spatial Allocation of Water Fractions

ISPRS International Journal of Geo-Information, 2017
Boundary pixels of rivers are subject to a spectral mixture that limits the accuracy of river areas extraction using conventional hard classifiers.
Milad Niroumand-Jadidi, Alfonso Vitti
doaj   +1 more source

Geometric Accuracy Assessment for Shoreline Derived from NDWI, MNDWI, and AWEI Transformation on Various Coastal Physical Typology in Jepara Regency using Landsat 8 OLI Imagery in 2018

Geoplanning: Journal of Geomatics and Planning, 2019
Landsat 8 OLI imagery and water index utilization is expected to be able to complete the shoreline data that is difficult to obtain by using terrestrial and hydrographic surveys.
A. Wicaksono, P. Wicaksono
semanticscholar   +1 more source

Inversion of surface soil moisture under vegetated areas based on optical and microwave remote sensing data

Guan'gai paishui xuebao
【Objective】 The effects of Vertical-Vertical (VV) polarization, Vertical-Horizontal (VH) polarization, and dual polarization on microwave remote sensing retrieval of surface soil moisture (0-10 cm) were investigated.
ZHOU Meiling, ZHANG Dening, WANG Hao, WEI Zheng, LIN Rencai   +4 more
doaj   +1 more source

A Comparison of Land Surface Water Mapping Using the Normalized Difference Water Index from TM, ETM+ and ALI

Remote Sensing, 2013
Remote sensing has more advantages than the traditional methods of land surface water (LSW) mapping because it is a low-cost, reliable information source that is capable of making high-frequency and repeatable observations.
Bingyu Sun, Yuanmiao Gui, Hailei Wang, Dongbo Zhou, Feng Ling, Zhiqiang Du, Wenbo Li, Xiaoming Zhang   +7 more
doaj   +1 more source