Results 11 to 20 of about 3,376 (207)

مطالعه و پایش تغییرات سطح آب و تأثیر آن بر دمای سطح تالاب با استفاده از شاخص های NDWI، MNDWI و AWEI (مطالعه موردی: تالاب های شادگان و هورالعظیم) [PDF]

علوم و مهندسی آبیاری, 2021
پایش و حفاظت از تالاب­ها به­دلیل نقش مهم این منابع در حفظ اکوسیستم و تامین نیازهای افتصادی و اجتماعی جوامع بشری امری لازم و ضروری می­باشد. در این تحقیق با استفاده از سه شاخص NDWI، MNDWI و AWEI میزان سطح تالاب­های هورالعظیم و شادگان واقع در استان خوزستان ...
خدیجه امیری, حسام سیدکابلی, فرهاد محمودی کهن   +2 more
doaj   +2 more sources

Assessment of Surface Water Dynamicsin Bangalore Using WRI, NDWI, MNDWI, Supervised Classification and K-T Transformation

Aquatic Procedia, 2015
Abstract Bangalore, the IT capital of India, is one of the fastest growing city of Asia. Rapid urbanization of Bangalore during the last two decades has posed a serious threat to the existence of ecological systems, specifically water bodies which play a crucial part in supporting life.
Gautam, Vivek Kumar, Gaurav, Piyush Kumar, Murugan, P., Annadurai, M.   +3 more
exaly   +2 more sources

Fluvio-geomorphic change of the Padma-Meghna river course using the NDWI and MNDWI techniques

Water Science
Abstract This study intends to investigate the fluvial-geomorphic change and erosion-accretion processes of two significant rivers. The 2149 km2 research area's overall erosion and accretion were depicted using multi-temporal Landsat images and NDWI, MNDWI methods to measure and investigate change.
Faruk Hossain, Mohammad Ashraful Kamal, Tahera Afrin   +2 more
exaly   +3 more sources

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   +2 more sources

Monitoring the Desiccation of Inland Wetland by Combining MNDWI and NDVI: A Case Study of Upo Wetland in South Korea

Journal of Korea Spatial Information Society, 2015
This research is primarily intended to explore a novel way to monitor desiccation of inland wetland by combining MNDWI (Modified Normalized Difference Water Index) and NDVI (Normalized Difference Vegetation Index). The changes for vegetation and water condition on Upo Wetland located at southeastern Korea were investigated by MNDWI and NDVI derived ...
Jung-Sup Um
exaly   +3 more sources

Determining the Temporal Change in Tuz Gölü between 2000-2020 by Remote Sensing

Turkish Journal of Agriculture: Food Science and Technology, 2023
Changes in the landscape become extremely destructive and many heritage values and resources are irreversibly lost. The speed, frequency and magnitude of these changes in the landscape increased in the second half of the 20th century, especially with the
Nuriye Ebru Yıldız, Zeynep Çetiner
doaj   +1 more source

Pemetaan Cepat Genangan Banjir Menggunakan Teknologi Remote Sensing

Rekayasa Sipil, 2022
The existence of a flood inundation rapid map is needed in flood mitigation. This research is intended to map flood inundation quickly by utilizing satellite image technology. Sentinel 2 Level 1C technology uses before and after the flood. The extraction
Tedy Pranadiarso, Entin Hidayah, Gusfan Halik   +2 more
doaj   +1 more source

A Seasonal Investigation on Land Surface Temperature and Spectral Indices in Imphal City, India

Journal of Landscape Ecology, 2022
The study focused on investigating the seasonal and spatiotemporal relationship between the relationships of LST with four spectral indices (MNDWI, NDBaI, NDBI, and NDVI) in and around Manipur City of India using eight cloud-free Landsat data from the ...
Pandey Anupam, Mondal Arun, Guha Subhanil, Upadhyay Pradeep Kumar, Rashmi   +4 more
doaj   +1 more source

Remotely sensed mid-channel bar dynamics in downstream of the Three Gorges Dam, China [PDF]

, 2020
The downstream reach of the Three Gorges Dam (TGD) along the Yangtze River (1560 km) hosts numerous mid-channel bars (MCBs). MCBs dynamics are crucial to the river’s hydrological processes and local ecological function.
Shao, Guofan, Wen, Zhaofei, Wu, Shengjun, Yang, Hong, Zhang, Ce   +4 more
core   +1 more source

Comparison of NDWI, MNDWI1 and MNDWI2 Indices from Sentinel-2 Satellite Images for Extracting Urban Surface Water Bodies in Khon Kaen

วารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, 2021
The objective of this research is to compare methods for determining the Normalized Difference Water Index (NDWI) and the Modified Normalized Difference Water Index (MNDWI) and resistance to urban and urban disturbances.
Chaiyarit Sawetwong, Pipat Reungsang
doaj   +1 more source