scholarly journals Application of the time transgrassive aerospace information for assessment of avalanche activity and hazard (Central Caucasus)

2021 ◽  
Author(s):  
Р.Г. Аветисова ◽  
М.Д. Докукин ◽  
О.В. Остапцов
Keyword(s):  
Satellite Images ◽  
Aerial Photographs ◽  
Summer Period ◽  
Central Caucasus ◽  
Space Image ◽  
Aerospace Images

На основе дешифрирования разновременных аэрофотоснимков с 1957 г. по 1988 г. и космических снимков с 2005 г. по 2020 г. приведены данные о лавинопроявлениях в районах Центрального Кавказа (бассейны рек Баксан, Черек и Мамихдон). Факты схода лавин устанавливались в результате сравнения разновременных аэрокосмоснимков и их GIF-анимаций по особенностям теней заснеженных поверхностей от неровностей отложений лавин, наличию лавинных снежников в весенне-летний период, по характеру и ареалам растительности, а так же по уникальному космоснимку в момент схода ла- вины. Based on aerial photographs interpretation from 1957 to 1988 and satellite images interpretation from 2005 to 2020, data on avalanche phenomena in the regions of the Central Caucasus (basins of the Baksan, Cherek and Mamikhdon rivers) are presented. Avalanche facts were established as a result of comparing different-time aerospace images and their GIF animations on the features of shadows of the snowy areas from the irregularities of avalanche deposits, the presence of avalanche snow-patch in the spring-summer period, in nature and vegetation ranges, as well as on a unique space image at the time of avalanche.

scholarly journals HAZARDOUS NATURAL PROCESSES ACTIVITY EVALUATION IN THE YUSENGI GORGE (THE ELBRUS REGION, CENTRAL CAUCASUS)

2020 ◽  
Author(s):  
Р.Г. Мискарова ◽  
М.Д. Докукин ◽  
Е.А. Савернюк ◽  
А.В. Хаткутов ◽  
Р.Х. Калов ◽  
...  
Keyword(s):  
Aerial Photographs ◽  
Summer Period ◽  
Space Images ◽  
Natural Processes ◽  
Activity Evaluation ◽  
Central Caucasus ◽  
The Right ◽  
Space Image

При сравнении аэрофотоснимков 1983 и 1988 гг. был выявлен факт схода обвала со склона г. Гогутай (3 753 м). На основе анализа рельефа правого склона долины выявлены массивы ополз- ней, которые в литературе отмечены как сейсмогенные. Активность селевых процессов определялась по изменению контуров зон селевых отложений на трех конусах выноса и по изменениям русел на участке широкой поймы. Факты схода лавин устанавливались в результате сравнения разновременных космоснимков и их GIF-анимаций по наличию лавинных снежников в весенне-летний период, по характеру и ареалам растительности, а также по уникальному космоснимку в момент схода лавины. Гра- ницы лавиносборов определялись на основе карты уклонов склонов в сравнении с локальным рельефом местности, фотографиями с маршрутных обследований и контурами лавинных от- ложений на космоснимках. Всего выделено 60 лавиносборов (включающих более 200 путей схода лавин), суммарной площадью 23,4 км2. On the basis of route surveys data in 2008, 2010, 2016 and 2017, decryption of space images from 2015 to 2019 and aerial photographs from 1957 to 1988, the paper considers the activity of dangerous natural processes in the Yusengi Valley: mudfl ows, landslides, avalanches and rockslides. When comparing aerial photographs of 1983 and 1988, the fact of the rockslide from the slope of the mountain Gogutai (3 753 m) is revealed. On the basis of the relief analysis of the right slope of the valley, landslides masses that are known in literature as seismogenic have been identifi ed. The activity of mudfl ow processes was determined by the change in the contours of the zones of the mudfl ow deposits on the three debris cones and by the changes of the stream course in the wide fl oodplain area. The facts of the avalanche collapse were established as a result of the comparison of space images and their GIF animations taken at different times, which carried out in terms of the avalanche snow-patches presence during the spring and summer period, considering the nature and habitat of vegetation, and also the unique space image taken at the very moment of the avalanche collapse. The borders of avalanche catchments were determined on the basis of a map of slopes in comparison with the local terrain, photographs from route surveys and ontours of avalanche deposits on space images. A total of 60 avalanche catchments (including more than 200 avalanche paths), with a total area of 23.4 km2, have been isolated.

Results of monitoring ice collapses using aerospace and ground-based information

2020 ◽  
Vol 20 (3) ◽  
pp. 60-68
Author(s):  
M.D. Dokukin ◽  
◽  
M.Yu. Bekkiev ◽  
Kh.M. Kalov ◽  
R.Kh. Kalov ◽  
...  
Keyword(s):  
Satellite Images ◽  
Swiss Alps ◽  
Summer Period ◽  
The Caucasus ◽  
Central Caucasus

Data on ice collapses in the Caucasus and Alps mountains obtained as a result of deciphering multitime satellite images are presented: ice collapses of hanging glaciers, end parts of glaciers, sections of glaciers on steep steps of the indigenous relief, sections of icefalls. The activity of ice collapses in the summer period was revealed. The range of the release of ice blocks of the Trift glacier in the Swiss Alps in 2017 reached 1050 m. Ice collapses were observed in the areas of icefalls on the Irik, Terskol, and Garabashi glaciers (on the slopes of Elbrus) with a range of up to 330 m. The most active were the ice-stone collapses of hanging glaciers and underlying bedrock in the Kolka glacier cirque in 2002 and 2003 and the ice collapses of the advancing glacier on the Kazbek slope in 2015-2019. Annual ice collapses from the Bezengi wall (Central Caucasus) are noted.

Classification of vegetation in Cucphuong National Park with the aim of large-scale mapping, Vietnam

1996 ◽  
pp. 64-67 ◽  
Author(s):  
Nguen Nghia Thin ◽  
Nguen Ba Thu ◽  
Tran Van Thuy
Keyword(s):  
National Park ◽  
Large Scale ◽  
Satellite Images ◽  
Field Work ◽  
Aerial Photographs ◽  
Vegetation Map ◽  
Dense Forest ◽  
Broad Leaved Forest ◽  
Leaved Forest

The tropical seasonal rainy evergreen broad-leaved forest vegetation of the Cucphoung National Park has been classified and the distribution of plant communities has been shown on the map using the relations of vegetation to geology, geomorphology and pedology. The method of vegetation mapping includes: 1) the identifying of vegetation types in the remote-sensed materials (aerial photographs and satellite images); 2) field work to compile the interpretation keys and to characterize all the communities of a study area; 3) compilation of the final vegetation map using the combined information. In the classification presented a number of different level vegetation units have been identified: formation classes (3), formation sub-classes (3), formation groups (3), formations (4), subformations (10) and communities (19). Communities have been taken as mapping units. So in the vegetation map of the National Park 19 vegetation categories has been shown altogether, among them 13 are natural primary communities, and 6 are the secondary, anthropogenic ones. The secondary succession goes through 3 main stages: grassland herbaceous xerophytic vegetation, xerophytic scrub, dense forest.

Learning English and Irish via satellite images and aerial photographs

Planet ◽  
2012 ◽  
Vol 26 (1) ◽  
pp. 31-35
Author(s):  
Dennis Edler ◽  
Nils Lammert-Siepmann ◽  
Carsten Jürgens
Keyword(s):  
Satellite Images ◽  
Aerial Photographs ◽  
Learning English

scholarly journals Recent glacier variations in Mongolia

2007 ◽  
Vol 46 ◽  
pp. 185-188 ◽  
Author(s):  
Kadota Tsutomu ◽  
Davaa Gombo
Keyword(s):  
Global Warming ◽  
Satellite Images ◽  
Monitoring Network ◽  
Aerial Photographs ◽  
Northern Eurasia ◽  
High Mountain ◽  
Altai Mountains ◽  
Mountain Regions ◽  
Significant Change ◽  
Topographical Maps

AbstractGlacier monitoring enables us to detect influences of global warming in high mountain regions. To initiate the establishment of a glacier-monitoring network in northern Eurasia, we studied recent glacier variations in Mongolia using topographical maps, aerial photographs and satellite images (Corona and Landsat). Glaciers in Mongolia exist in the Altai mountains which span approximately 1400 km within Russia, China and Mongolia. Four regions were selected to form the study area: Tavan Bogd region, Turgen massif, Kharkhiraa massif and Tsambagarav massif. During the period from the 1940s to 2000 or from 1968 to 2000, the glaciers in these regions lost 10.2%, 19.3%, 28.0% and 28.8% of their area respectively. The glaciers in the Tavan Bogd, Kharkhiraa and Turgen regions were found to have been almost stationary since 1987/88, while those in Tsambagarav massif showed no significant change in area since 1963. Shrinkage of the glaciers occurred between 1945/68 and 1987/88 in the former regions and between 1948 and 1963 in the latter. Mongolian glaciers seem to behave differently from other glaciers which have been experiencing steady shrinkage recently.

Survival of Shrines from the 2011 Great Tsunami

2013 ◽  
Vol 8 (sp) ◽  
pp. 826-834
Author(s):  
Takaaki Uda ◽  
◽  
Kazuya Sakai
Keyword(s):  
Satellite Images ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Aerial Photographs ◽  
Tsunami Height ◽  
Tsunami Damage

A massive magnitude 9.0 earthquake occurring on March 11, 2011, triggered a powerful tsunami that devastated large areas along Japan’s eastern Pacific coast. We investigated tsunami damage using satellite images and aerial photographs, and visited devastated sites, including 27 Shinto shrines, near the coast in 2011 and 2012. We found that all but two of these shrines survived the tsunami, even though tsunami height differed from place to place. As a memorial to those who lost their lives in previous tsunamis, shrines were built in places to which residents could safely evacuate. Many of these shrines were undamaged because their elevation was higher than the tsunami height, and the lives of those who evacuated to them were saved.

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