DEBRIS FLOW FORMATION CONDITIONS IN THE NORTH-EAST OF RUSSIA

2020 ◽  
Vol XIV (3/2020) ◽  
Keyword(s):  
Debris Flow ◽  
North East ◽  
The North ◽  
Flow Formation ◽  
Formation Conditions

scholarly journals Aufeis of the Indigirka river basin (Russia): the database from historical data and recent Landsat images

2018 ◽  
Author(s):  
Olga Makarieva ◽  
Andrey Shikhov ◽  
Nataliia Nesterova ◽  
Andrey Ostashov
Keyword(s):  
Interannual Variability ◽  
20Th Century ◽  
Historical Data ◽  
Topographic Maps ◽  
Landsat Images ◽  
North East ◽  
The North ◽  
Digital Database ◽  
Formation Conditions ◽  
Basin Area

Abstract. Detailed spatial geodatabase of aufeis in the Indigirka River, the basin area 305 000 km2, Russia was compiled from the Cadaster of aufeis of the North-East of the USSR published in 1958, topographic maps and Landsat images for 2013–2017. The aufeis area share varies from 0.26 to 1.15 % in different river sub-basins within the studied area. Digitized Cadaster (1958) contains the coordinates and characteristics of 897 aufeises with total area of 2064 km2. The Landsat-based identification of aufeises for 2013–2017 allowed the description of 1213 aufeises on a total area of 128 km2. The combined digital database of the aufeis is available at https://doi.pangaea.de/10.1594/PANGAEA.891036. The satellite-derived total area of aufeis is 1.6 times less than in the Cadaster (1958). At the same time, more than 600 aufeis identified by Landsat images analyses are missing in the Cadaster (1958). It implies that the aufeis formation conditions may have been changed between the mid-20th century and the present. About 60 % of total area presents 10 % of the largest aufeis. Most aufeis are located in the elevation band of 1100–1300 m. The interannual variability of the aufeis area was estimated by the example of the Bolshaya Momskaya naled (aufeis) and the group of large aufeis in the basin of the Syuryuktyakh River for the period of 2001–2016. The results of analysis indicate a tendency towards a decrease in the area of the Bolshaya Momskaya naled in recent years, at the same time the reduction in the aufeis area in the basin of the Syuryuktyakh River has not occurred.

Shingled Quaternary debris flow lenses on the north-east Newfoundland Slope

Sedimentology ◽  
1992 ◽  
Vol 39 (2) ◽  
pp. 193-206 ◽  
Author(s):  
A. E. AKSU ◽  
R. N. HISCOTT
Keyword(s):  
Debris Flow ◽  
North East ◽  
The North

Countermeasures and Scheme in Preventing Zhaohe River Debris Flow Disaster in Erlong Town, Zhenping County in Henan Province

2014 ◽  
Vol 1065-1069 ◽  
pp. 2377-2380
Author(s):  
Wei Zhang
Keyword(s):  
Debris Flow ◽  
Natural Environment ◽  
Henan Province ◽  
Comprehensive Treatment ◽  
The South ◽  
Treatment Scheme ◽  
Flow Formation ◽  
Formation Conditions ◽  
Debris Flow Disaster

Zhaohe debris flow gully is located in the south foothill of Funiu Moutain, serious debris flow disasters occurred here. Now it is still threatening downstream villagers’ life and property safety directly. The geology, landform, climate and other natural environment conditions of Zhaohe valley were analyzed. It shows that Zhao He have debris flow formation conditions. A comprehensive treatment scheme including fending dikes, cleaning river, suppressing foot engineering and biological measures, was put forward based on the hazard characteristic.

scholarly journals Formation Conditions And Debris Flow Regime In Jiangjia Ravine, Yunnan, China – Applicability Of Russian Methodology

2022 ◽  
Author(s):  
Mingtao Ding ◽  
Aleksandr L. Shnyparkov ◽  
Pavel B. Grebennikov ◽  
Timur I. Khismatullin ◽  
Sergey A. Sokratov
Keyword(s):  
Debris Flow ◽  
Debris Flows ◽  
Climatic Conditions ◽  
Research Station ◽  
Normative Documents ◽  
Flow Formation ◽  
Geological Conditions ◽  
Wide Range ◽  
Formation Conditions ◽  
Former Ussr

The requirements of the debris flows’ parameters assessments vary from country to country. They are based on different theoretical and empirical constructions and are validated by data from different regions. This makes difficult comparison of the reported results on estimated debris flows activity and extent. The Russian normative documents for the debris flows’ parameters calculations are based on empirically-measured parameters in wide range of geological and climatic conditions at the territory of former USSR, but still not cover all the possible conditions of debris flow formation. An attempt was made to check applicability of the Russian empirical constructions for the conditions of the debris flows formation in Yunnan, China, where unique long-term dataset of debris flows characteristics is collected by the Dongchuan Debris Flow Observation and Research Station. The results show, that in general the accepted in Russia methodology of calculation of the parameters of debris flows of certain probability corresponded well to the observed in Dongchuan debris flows characteristics. Some discrepancies (in the average debris flow depth) can be explained by unknown exact return period of the actually observed debris flows. This allowed to conclude that the presently adopted empirical dependencies based on country-wide (USSR) empirical data can be extrapolated up to the monsoon climate and geological conditions of Yunnan province.

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

Lichens in the North-East regions of Cyprus

1999 ◽  
Vol 110 (5-6) ◽  
pp. 455-463 ◽  
Author(s):  
S. Güvenç ◽  
Ş Öztürk
Keyword(s):  
North East ◽  
The North

TBE in Italy

2019 ◽  
Author(s):  
Valentina Tagliapietra ◽  
Flavia Riccardo ◽  
Giovanni Rezza
Keyword(s):  
Case Series ◽  
East Part ◽  
Mountainous Regions ◽  
North East ◽  
The North ◽  
Tick Borne Encephalitis ◽  
Low Incidence

Italy is considered a low incidence country for tick-borne encephalitis (TBE) in Europe. Areas at higher risk for TBE in Italy are geographically clustered in the forested and mountainous regions and provinces in the north east part of the country, as suggested by TBE case series published over the last decade.

Sign in / Sign up

Export Citation Format

Share Document