Results 31 to 40 of about 117,891 (325)

Land Surface Temperature Change Observation and Spatial Area Determination with Satellite Images in the Fire Area

open access: yesDoğal Afetler ve Çevre Dergisi, 2022
Fighting fires is an extremely important issue to prevent the loss of forests. With the developing technology, satellite images have become one of the basic tools for fighting fire over time. By using various indexes, it is possible to detect the burning
Alperen Cihan, Kübra Cerit
doaj   +1 more source

Modelling fire occurrence at regional scale. Does vegetation phenology matter? [PDF]

open access: yes, 2015
Through its influence on biomass production, climate controls fuel availability affecting at the same time fuel moisture and flammability, which are the main determinants for fire ignition and propagation.
Bajocco, Sofia   +2 more
core   +1 more source

Crop Yield Estimation Using NDVI: A Comparison of Various NDVI Metrics

open access: yes, 2021
The objective of this study is to examine and compare multiple Normalized Difference Vegetation Index (NDVI) metrics for estimating crop yield. There are several terms used to describe NDVI metrics including: process methods, aggregation techniques, phenological indices, and aggregation metrics.
openaire   +2 more sources

Using LANDSAT time series for assessing reforestation on clear cuts in Bryansk region [PDF]

open access: yesВопросы лесной науки, 2019
This paper submitted the method of remote sensed estimate the forest artificial regeneration (tree planting). The objective was to designate the moment of transition from clear cuts to forested lands.
E.I. Belova, D.V. Ershov
doaj   +1 more source

Tule elk selection of surface water and forage is mediated by season and drought

open access: yesCalifornia Fish and Wildlife Journal, 2022
Climate change is expected to affect arid-system ungulate populations by altering the distribution and availability of critical resources such as water and forage, particularly through more frequent and extreme droughts.
Adam S. Mohr   +2 more
doaj   +1 more source

Sensitivity of GNSS-R spaceborne observations to soil moisture and vegetation [PDF]

open access: yes, 2016
Global navigation satellite systems-reflectometry (GNSS-R) is an emerging remote sensing technique that makes use of navigation signals as signals of opportunity in a multistatic radar configuration, with as many transmitters as navigation satellites are
Camps Carmona, Adriano José   +6 more
core   +2 more sources

Optimalisasi Transformasi Spektral Ui, Ndbi, Ndvi Dan Kombinasi Tranformasi Spektral Ui – Ndvi Dan Ndbi - Ndvi Guna Mendeteksi Kepadatan Lahan Terbangun Di Kota Magelang

open access: yesJAGAT (Jurnal Geografi Aplikasi dan Teknologi), 2017
Penggunaan citra dengan resolusi menengah guna memndeteksi kepadatan lahan terbangun pada saat ini belum dimanfaatkan secara optimal, karena sulitnya menbedakan lahan terbangun dan lahan terbuka/kosong.Penelitian ini bertujuan untuk nmengkaji kemampuan tranformasi spectral dan kombinasinya guna mendeteksi kepadatan lahan terbangun dan menkaji pola ...
Kurniawan, Surya   +2 more
openaire   +2 more sources

Winter Conditions Influence Biological Responses of Migrating Hummingbirds

open access: yes, 2016
Conserving biological diversity given ongoing environmental changes requires the knowledge of how organisms respond biologically to these changes; however, we rarely have this information. This data deficiency can be addressed with coordinated monitoring
Burnham K. P.   +8 more
core   +1 more source

Assessing water availability in Mediterranean regions affected by water conflicts through MODIS data time series analysis [PDF]

open access: yes, 2019
Water scarcity is a widespread problem in arid and semi-arid regions such as the western Mediterranean coastal areas. The irregularity of the precipitation generates frequent droughts that exacerbate the conflicts among agriculture, water supply and ...
Koch, Magaly   +3 more
core   +2 more sources

Inherent Reflectance Variability of Vegetation

open access: yesAgriculture, 2019
With the inception of small unmanned aircraft systems (sUAS), remotely sensed images have been captured much closer to the ground, which has meant better resolution and smaller ground sample distances (GSDs).
Baabak Mamaghani   +2 more
doaj   +1 more source

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