Results 11 to 20 of about 1,026 (165)

SPECIFIC FEATURES OF NDVI, NDWI AND MNDWI AS REFLECTED IN LAND COVER CATEGORIES [PDF]

Acta Geographica Debrecina. Landscape & Environment Series, 2016
The remote sensing techniques provide a great possibility to analyze the environmental processes in local or global scale. Landsat images with their 30 m resolution are suitable among others for land cover mapping and change monitoring.
SZILÁRD SZABÓ, ZOLTÁN GÁCSI, BOGLÁRKA BALÁZS   +2 more
doaj   +2 more sources

Monitoring of the hydrological regime of the Saratov reservoir using the MNDWI index

IOP Conference Series: Earth and Environmental Science, 2021
Abstract The article analyzes the possibilities of using Earth remote sensing (ERS) indices for monitoring the state of the environment. The possibility of using remote sensing indices for monitoring and forecasting the state of water bodies and watercourses, their hydrological characteristics was assessed.
D N Sherstobitov, V V Ermakov, A A Bochkina, O V Tupitsyna, D E Bykov, K L Chertes   +5 more
openaire   +1 more source

اندازه گیری نوسانات بهار و پاییز شاخص های کاربری زمین (LULC) با استفاده از روش ماشین بردار پشتیبانی (SVM) و تحلیل روابط همبستگی LST با شاخص های NDBI، MNDWI و NDVI T T، در محدوده گردنه حیران [PDF]

هیدروژئومورفولوژی
هدف از این تحقیق بررسی روابط بین LST و LULC در منطقه گردنه حیران می باشد. شاخص های LULC متشکل از شاخص های تفاوت نرمال شده پوشش گیاهی (NDVI) ، تفاوت نرمال شده ساخت و ساز (NDBI) و تفاوت نرمال شده و اصلاح شده آب (MNDWI) می باشد.
مهدی فیض اله پور
doaj   +1 more source

A new method for surface water extraction using multi-temporal Landsat 8 images based on maximum entropy model

European Journal of Remote Sensing, 2022
The spectral matching algorithm based on the discrete particle swarm optimization algorithm (SMDPSO) sometimes overestimates extracted surface water areas.
Wangping Li, Wanchang Zhang, Zhihong Li, Yu Wang, Hao Chen, Huiran Gao, Zhaoye Zhou, Junming Hao, Chuanhua Li, Xiaodong Wu   +9 more
doaj   +1 more source

BRAZILIAN MIDWEST NATIVE VEGETATION MAPPING BASED ON GOOGLE EARTH ENGINE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Google Earth Engine (GEE) platform is an online tool, which generates fast solutions in terms of image classification and does not require high performance computers locally.
N. V. Estrabis, L. Osco, A. P. Ramos, W. N. Gonçalves, V. Liesenberg, H. Pistori, J. Marcato Junior   +6 more
doaj   +1 more source

Detecting, extracting, and mapping of inland surface water using Landsat 8 Operational Land Imager: A case study of Pune district, India [version 1; peer review: 2 approved]

F1000Research, 2022
Background: Recent developments in optical satellite remote sensing have led to a new era in the detection of surface water with its changing dynamics.
Humera Khanum, Kanchan Khare, Rushikesh Kulkarni, Rushikesh Kulkarni   +3 more
doaj   +1 more source

تشخیص تغییرات پهنه آبی تالاب میقان با بهره گیری از شاخص های طیفی NDWI، MNDWI، AWEI و مدل های نظارت شده SVM در بازه زمانی 1373 تا 1401 [PDF]

مطالعات جغرافیایی مناطق خشک
هدف: تغییرات اقلیمی و سوء مدیریت در سال‌های اخیر در بخش‌های وسیعی از جهان به خصوص نواحی خشک و نیمه خشک باعث تخریب تالاب‌ها و دریاچه‌ها گردیده است. در بخش‌های مرکزی کشور ایران این پدیده مشهودتر بوده و بررسی‌ها نشان از خشک شدن تالاب‌ها و دریاچه‌ها داشته ...
مهدی فیض اله پور
doaj   +1 more source

A NOVEL METHOD FOR WATER AND WATER CANAL EXTRACTION FROM LANDSAT-8 OLI IMAGERY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Constituents of hydrologic network, River and water canals play a key role in Agriculture for cultivation, Industrial activities and urban planning. Remote sensing images can be effectively used for water canal extraction, which significantly improves ...
S. L. K. Reddy, C. V. Rao, P. R. Kumar, R. V. G. Anjaneyulu, B. G. Krishna   +4 more
doaj   +1 more source

Analysis of the spatiotemporal mechanism of high temperature on residents’ irritability in Beijing based on multiscale geographically weighted regression model

Frontiers in Ecology and Evolution, 2022
The emotional health of urban residents is increasingly threatened by high temperatures due to global heating. However, how high temperature affects residents’ emotional health remains unknown.
Huanchun Huang, Xuan Liu, Lijian Ren
doaj   +1 more source

The development of digital models of the soil cover in the western part of Bol’shezemel’skaya tundra

Бюллетень Почвенного института им. В.В. Докучаева, 2019
The methods of digital mapping are promising for creating soil maps on difficultly accessible territories. This study was aimed at searching of optimal approaches for digital mapping of the soil cover in poorly studied western part of the Bol’shezemel ...
V. N. Vekshina
doaj   +1 more source