Results 31 to 40 of about 17,654,855 (215)

Review article: Detection of inundation areas due to the 2015 Kanto and Tohoku torrential rain in Japan based on multi-temporal ALOS-2 imagery [PDF]

Natural Hazards and Earth System Sciences, 2018
Torrential rain triggered by two typhoons hit the Kanto and Tohoku regions of Japan from 9 to 11 September 2015. Due to the record-breaking amount of rainfall, several riverbanks were overflowed and destroyed, causing floods over wide areas.
W. Liu, F. Yamazaki
doaj   +1 more source

Palsar i Vissátvuopmi: Kartering och klassificering utifrån DEM-raster [PDF]

, 2020
Palsar är torvkullar med en kärna av permafrost som förekommer i subarktiska miljöer med diskontinuerlig permafrost. Palsarna är mycket känsliga för klimatförändringar och har minskat snabbt till följd av den globala uppvärmningen, med bland annat ...
Mägi Hurtig, Ivar, Gustafsson, Ellinor
core  

The distribution and amount of carbon in the largest peatland complex in Amazonia [PDF]

, 2014
This work was funded by NERC grants NE/I021217/1 and NE/J50001X/1.Peatlands in Amazonian Peru are known to store large quantities of carbon, but there is high uncertainty in the spatial extent and total carbon stocks of these ecosystems.
Draper, FC, Torres Montenegro, Luis, Honorio Coronado, EN, Luis Torres Montenegro, Ricardo Zaráte, Roucoux, Katherine H, Mitchard, Edward T A, Honorio Coronado, Euridice N, Lahteenoja, Outi, Draper, Frederick C, Roucoux, KH, Zarate, Ricardo, Frederick C Draper, Edward T A Mitchard, Torres Montenegro, L, Euridice N Honorio Coronado, Lawson, IT, Outi Lähteenoja, Katherine H Roucoux, Roucoux, Katherine Helen, Ian T Lawson, Baker, Timothy, Lahteenoja, O, Honorio Coronado, Euridice, Draper, Frederick, Lawson, Ian Thomas, Baker, Timothy R, Zarate, R, Lawson, Ian T, Valderrama Sandoval, Elvis, Baker, TR, Valderrama Sandoval, E, Mitchard, Edward, Mitchard, ETA, Timothy R Baker, Elvis Valderrama Sandoval   +35 more
core   +1 more source

Annual Maps of Forests in Australia from Analyses of Microwave and Optical Images with FAO Forest Definition

Journal of Remote Sensing, 2021
The Australian governmental agencies reported a total of 149 million ha forest in the Food and Agriculture Organization of the United Nations (FAO) in 2010, ranking sixth in the world, which is based on a forest definition with tree height>2 meters. Here,
Yuanwei Qin, Xiangming Xiao, Jean-Pierre Wigneron, Philippe Ciais, Josep G. Canadell, Martin Brandt, Xiaojun Li, Lei Fan, Xiaocui Wu, Hao Tang, Ralph Dubayah, Russell Doughty, Qing Chang, Sean Crowell, Bo Zheng, Kevin Neal, Jorge A. Celis, Berrien Moore   +17 more
doaj   +1 more source

Removal of Ionospheric Effects from Sigma Naught Images of the ALOS/PALSAR-2 Satellite [PDF]

Remote Sensing, 2022
The monitoring of forest degradation in the Amazon through radar remote sensing methodologies has increased intensely in recent years. Synthetic aperture radar (SAR) sensors that operate in L-band have an interesting response for land use and land cover (LULC) as well as for aboveground biomass (AGB).
Fábio Furlan Gama, Natalia Cristina Wiederkehr, Polyanna da Conceição Bispo   +2 more
openaire   +2 more sources

Preliminary Study on the Radar Vegetation Index (RVI) Application to Actual Paddy Fields by ALOS/PALSAR Full-polarimetry SAR Data [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Kim and van Zyl (2001) proposed a kind of radar vegetation index (RVI). RVI = 4*min(λ1, λ2, λ3) / (λ1 + λ2 + λ3) They modified the equation as follows. (2009) RVI = 8 * σ0hv / (σ0hh + σ0vv +σ0hv ) by L-band full-polarimetric SAR data.
Y. Yamada
doaj   +1 more source

Multi-Sensor InSAR Analysis of Progressive Land Subsidence over the Coastal City of Urayasu, Japan

Remote Sensing, 2018
In earthquake-prone areas, identifying patterns of ground deformation is important before they become latent risk factors. As one of the severely damaged areas due to the 2011 Tohoku earthquake in Japan, Urayasu City in Chiba Prefecture has been ...
Yusupujiang Aimaiti, Fumio Yamazaki, Wen Liu   +2 more
doaj   +1 more source

Comparison of multi-source remote sensing data for estimating and mapping above-ground biomass in the West Usambara tropical montane forests

Scientific African, 2023
Above-ground biomass (AGB) estimation is important to better understand the carbon cycle and improve the efficiency of forest policy and management activities.
Sami D. Madundo, Ernest W. Mauya, Charles J. Kilawe   +2 more
doaj   +1 more source

Long-term vegetation changes in elephant-related areas of concern in Kruger National Park, South Africa. [PDF]

Ecol Appl
Abstract African elephants, whether alone or in combination with other environmental factors such as floods, droughts, fire, and other herbivores, have significant impacts on large savanna trees, often contributing to declines over time. However, their effects on woody vegetation in general remain less well understood.
Coetsee C, Kleyn L, Vogeler JC, Filippelli SK, Vermeulen LM, Wigley BJ, Ferreira S.   +6 more
europepmc   +2 more sources

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers, Masaki Hayashi, Pablo A. Mendoza   +2 more
wiley   +1 more source