Results 31 to 40 of about 1,006 (165)

بررسی تاثیر تغییرات پهنه آبی سد تهم در نوع کاربری اراضی و دمای سطح زمین با بهره گیری از شاخص های طیفی NDWI، MNDWI و AWEI و ماشین بردار پشتیبانی SVM در بازه زمانی 2002 تا 2023 [PDF]

هیدروژئومورفولوژی
تغییرات مکانی و زمانی آبهای سطحی بر ساختار و عملکرد اکوسیستم های منطقه سد تهم و همچنین توسعه کشاورزی، اقتصادی و اجتماعی در این منطقه تاثیر می گذارد. در این تحقیق به منظور تشخیص تغییرات طولانی مدت سد تهم در بازه زمانی 2002 تا 2023 از شاخص های MNDWI، AWEI ...
مهدی فیض اله پور
doaj   +1 more source

Flood mapping based on open-source remote sensing data using an efficient band combination system

Acta Geographica Slovenica, 2022
Flood mapping is an essential component of planning flood mitigation. The availability of remote sensing data makes rapid flood mapping possible. This article develops an accurate method for rapid flood mapping using satellite imagery. Sentinel-2 imagery
Entin Hidayah, Tedy Pranadiarso, Gusfan Halik, Indarto Indarto, Wei-Koon Lee, Mokhammad Farid Maruf   +5 more
doaj   +1 more source

Water Bodies’ Mapping from Sentinel-2 Imagery with Modified Normalized Difference Water Index at 10-m Spatial Resolution Produced by Sharpening the SWIR Band

Remote Sensing, 2016
Monitoring open water bodies accurately is an important and basic application in remote sensing. Various water body mapping approaches have been developed to extract water bodies from multispectral images.
Yun Du, Yihang Zhang, Feng Ling, Qunming Wang, Wenbo Li, Xiaodong Li   +5 more
doaj   +1 more source

Assessing surface-groundwater interactions for sustaining spring wetlands of the Great Artesian Basin, Australia

Ecological Indicators, 2023
The Great Artesian Basin (GAB) is one of the world’s largest actively recharging aquifers. Groundwater discharges from the GAB sustain numerous spring wetlands, which have great ecological, scientific, and socio-economic significance.
Pankaj R. Kaushik, Christopher E. Ndehedehe, Ryan M. Burrows, Mark R. Noll, Mark J. Kennard   +4 more
doaj   +1 more source

Evaluation of the Surface Water Distribution in North-Central Namibia Based on MODIS and AMSR Series

Remote Sensing, 2014
Semi-arid North-central Namibia has high potential for rice cultivation because large seasonal wetlands (oshana) form during the rainy season. Evaluating the distribution of surface water would reveal the area potentially suitable for rice cultivation ...
Hiroki Mizuochi, Tetsuya Hiyama, Takeshi Ohta, Kenlo N. Nasahara   +3 more
doaj   +1 more source

A Combined Approach for Monitoring Monthly Surface Water/Ice Dynamics of Lesser Slave Lake Via Earth Observation Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Surface water/ice dynamic monitoring is crucial for many purposes, such as water resource management, agriculture, climate change, drought, and flood forecasting.
Hatef Dastour, Ebrahim Ghaderpour, Quazi K. Hassan   +2 more
doaj   +1 more source

Geospatial approaches for monitoring and mapping of water resources in semi-arid regions of Southern India

Environmental Challenges, 2022
Surface water monitoring is a necessary component of researching ecological and hydrological processes. Recent improvements in satellite-based remote sensors have ushered in a new era in the area of surface water monitoring. The assessment and mapping of
B.N. Anusha, K. Raghu Babu, B. Pradeep Kumar, P. Ravi Kumar, M. Rajasekhar   +4 more
doaj   +1 more source

Dinámica de inundaciones ambientales en humedales de la Cuenca baja del Rio Grijalva: enfoque espaciotemporal a través de imágenes Landsat

Revista de Teledetección
La diversidad de metodologías existentes para definir y analizar la dinámica de las superficies de agua muestra la dificultad que genera investigar su comportamiento, aunado a que existen variables que dificultan su delimitación tales como la ...
Tania G. Núñez-Magaña, Adalberto Galindo-Alcántara, Carlos A. Mastachi-Loza, Rocío Becerril-Piña, Miguel A. Palomeque de la Cruz, Silvia del C. Ruiz-Acosta   +5 more
doaj   +1 more source

Assessing the performance of remotely-sensed flooding indicators and their potential contribution to early warning for leptospirosis in Cambodia.

PLoS ONE, 2017
Remote sensing can contribute to early warning for diseases with environmental drivers, such as flooding for leptospirosis. In this study we assessed whether and which remotely-sensed flooding indicator could be used in Cambodia to study any disease for ...
Julia Ledien, Sopheak Sorn, Sopheak Hem, Rekol Huy, Philippe Buchy, Arnaud Tarantola, Julien Cappelle   +6 more
doaj   +1 more source

Evaluation of NDWI and MNDWI for assessment of waterlogging by integrating digital elevation model and groundwater level

Geocarto International, 2014
Accurate information on the extent of waterlogging is required for flood prediction, monitoring, relief and preventive measures. The rule-based classification algorithms were used for differentiating waterlogged areas from other ground features using Resourcesat-2 AWiFS satellite imagery (Indian Remote Sensing Satellite with spatial resolution of 56 m).
Kanwar Vivek Singh, Raj Setia, Shashikanta Sahoo, Avinash Prasad, Brijendra Pateriya   +4 more
openaire   +1 more source