نتایج جستجو برای: mndwi
تعداد نتایج: 147 فیلتر نتایج به سال:
Floods are hazard which poses immense threat to life and property. Identifying flood-prone areas, will enhance flood mitigation proper land use planning of affected areas. However, lack resources, the sizable extent rural settlements, evolving complexities contemporary models have hindered mapping areas in Ghana. This study used supervised Random Forest (RF) classification, Landsat 8 OLI, 7 ETM...
Changes in the landscape become extremely destructive and many heritage values resources are irreversibly lost. The speed, frequency magnitude of these changes increased second half 20th century, especially with impact human activities. Remote sensing is most widely used method for determining change landscape. In research, MNDWI, NDVI NDMI techniques, which frequently applied remote sensing, w...
Bu çalışmanın amacı çok bantlı uydu görüntüleri ile Seyfe Gölü yüzey alanının zamansal değişiminin Uzaktan Algılama (UA) ve Coğrafi Bilgi Sistemleri (CBS) teknikleri incelenmesidir. Çalışma alanı olan Gölü, 1447 km2 lik drenaj alanına sahip Havzasında yer almaktadır. Kapalı bir havzada alan göl beslenimi yağış, yüzeysel akış akifer birimlerden beslenim gerçekleşmektedir. Gölün boşalımı ise, yüz...
Soil moisture content (SMC) plays a critical role in soil science via its influences on agriculture, water resources management, and climate conditions. There is broad interest finding relationships between groundwater recharge, characteristics, plant properties for the quantification of SMC. The objective this study was to assess potential optical satellite imagery estimating SMC over cropland...
Landsat-7 Enhanced Thematic Mapper Plus (ETM+) and Landsat-8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are currently operational for routine Earth observation. There are substantial differences between instruments onboard both satellites. The enhancements achieved with Landsat-8 refer to the scanning technology (replacing of whisk-broom scanners with two separate push-bro...
The tsunami is a disaster that often occurs in Indonesia, there are no valid indicators to assess and monitor coastal areas based on functional land use cover which refers the biophysical characteristics of earth's surface. One recommended methods vegetation index. Vegetation index method from LULC can be used provide information how severe impact was area.In this study, an increase carried out...
For the Sentinel-2 multispectral satellite image remote sensing data, due to rich spatial information, traditional water body extraction methods cannot meet needs of practical applications. In this study, a random forest-based RF_16 optimal combination model algorithm is proposed extract bodies. The research process uses images and DEM data as basic collected 24 characteristic variable indicato...
Remote sensing techniques are of fundamental importance to investigate the changes occurred in terrestrial mosaic over years and contribute decision-making by increasing efficient environmental water management. This article aimed detect, demarcate quantify hydric area Poço da Cruz reservoir, located Ibimirim, Pernambuco, semiarid region Brazil, with modeling based on Landsat 8/OLI satellite mu...
زیستگاههای تالابی مهمترین اکوسیستمهای طبیعی کرۀ زمین هستند و نتایج بررسی تغییرات تالابها، یکی از نیازهای اساسی در مدیریت منابع طبیعی این زیستبومهای طبیعی است. هدف از انجام تحقیق حاضر، بررسی و مقایسۀ تغییرات تالابهای شهرستان پلدختر طی چهار دهۀ گذشته (1985تا 2018) با استفاده از تصاویر ماهوارهای لندست و کاربرد 7 شاخص پهنۀ آبی و گوگل ارث انجین است. این شاخصها شامل AWEInsh، AWEIsh، NDWI، M...
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