scholarly journals MULTI-HAZARD RISK ASSESSMENT OF QURUMBAR VALLEY, GHIZER, GILGIT BALTISTAN, PAKISTAN

2019 ◽  
Vol 4 ◽  
pp. 24
Author(s):  
S. K. Ali Shah ◽  
G. Khan ◽  
S. Ali ◽  
J. A. Qureshi ◽  
N. Habib ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Debris Flow ◽  
Field Data ◽  
Secondary Data ◽  
Bank Erosion ◽  
Flash Floods ◽  
Glacial Lake ◽  
Outburst Flood ◽  
Qualitative Approaches ◽  
Hazard And Risk

Being located in a seismically active zone, these mountain valleys are exposed to different hydro-meteorological hazards like rockfall, debris flow, landslide, ice avalanches, and glacial lake outburst flood (GLOFs).  The present study is to investigate different multi-hazards and their prevailing risk in the particular area of Qurumbar valley Ishkoman. In the mid-nineteen and twenty centuries at least six devastating glacial lake outburst floods (GLOFs) has been recorded, initially, only the Qurumbar glacier was considered as the main cause of this outburst flood, later field investigation and interview from local inhabitant revealed that nine more tributary glacier are existing in the area. The recent outburst of flood in the Badswat area of Qurumbar Ishkoman is also considerable, submerging 12 houses and a stretch of roads. Apart from it, the physical vulnerability of the area is increasing, as new areas are being used for housing with the increase in population. The study area is exposed to several other natural hazards like rock fall, debris flows, ice avalanches, and bank erosion. The present study is based on quantitative and qualitative approaches in assistance with GIS/RS an emergent application. The following methodologies were adapted to gather the primary and secondary data for GIS/RS processing. The primary data comprises GIS data and procurement and development and field data. The field data contain ground-truthing /validation. The community-based Hazard Vulnerability Risk Assessment (HVRA) was also carried out to know about human perception. Secondary data has been collected from different literature. Both the data were put into GIS for the processing which gives us our final developmental tools in the form of maps. The hazard and risk map of the Qurumbar Ishkoman depict that flash floods, debris flow, bank erosion, and GLOFs account for major hazards in Qurumbar valley. It is concluded based on our outcomes i.e., hazard and risk maps that earthquake is the main hazard of the area while flash floods, GLOFs, debris flow, bank erosion and the bank collapsed are the main hazards of the area. It is very important to systematically integrate map information into the planning and management process which contributes to a safer environment.

Glacial lake outburst flood risk assessment of Sun Koshi basin, Nepal

2010 ◽  
Vol 1 (2) ◽  
pp. 157-169 ◽  
Author(s):  
A. B. Shrestha ◽  
M. Eriksson ◽  
P. Mool ◽  
P. Ghimire ◽  
B. Mishra ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Flood Risk ◽  
Glacial Lake ◽  
Flood Risk Assessment ◽  
Outburst Flood ◽  
Glacial Lake Outburst Flood ◽  
Koshi Basin

scholarly journals Cryosphere hazards in Ladakh: the 2014 Gya glacial lake outburst flood and its implications for risk assessment

2020 ◽  
Vol 104 (3) ◽  
pp. 2071-2095 ◽  
Author(s):  
Susanne Schmidt ◽  
Marcus Nüsser ◽  
Ravi Baghel ◽  
Juliane Dame
Keyword(s):  
Remote Sensing ◽  
Risk Assessment ◽  
Integrated Approach ◽  
Glacial Lake ◽  
Glacial Lakes ◽  
Outburst Flood ◽  
Field Surveys ◽  
Depth Analysis ◽  
Glacial Lake Outburst Flood

Abstract This article attempts to reconstruct the causes and consequences of the 2014 glacial lake outburst flood (GLOF) event in Gya, Ladakh. We analyse the evolution of the Gya glacial lake using a high temporal and high spatial resolution remote sensing approach. In order to frame the case study in a larger picture, we produce a comprehensive inventory of glacial lakes for the entire Trans-Himalayan region of Ladakh. Changes in the extent and number of glacial lakes have been detected for the years 1969, 1993, 2000/02 and 2018 in order to assess the potential risk of future GLOFs in the region. The remote sensing approach was supported by field surveys between 2014 and 2019. The case study of the Gya GLOF illustrates the problem of potentially hazardous lakes being overlooked in inventories. The broader analysis of the Ladakh region and in-depth analysis of one GLOF lead us to propose an integrated approach for detecting undocumented GLOFs. This article demonstrates the necessity for using multiple methods to ensure robustness of risk assessment. The improved understanding can lead to a more accurate evaluation of exposure to cryosphere hazards and identification of alternative mechanisms and spatial patterns of GLOFs in the Himalaya.

A comprehensive approach and methods for glacial lake outburst flood risk assessment, with examples from Nepal and the transboundary area

2015 ◽  
Vol 31 (2) ◽  
pp. 219-237 ◽  
Author(s):  
Narendra Raj Khanal ◽  
Pradeep Kumar Mool ◽  
Arun Bhakta Shrestha ◽  
Golam Rasul ◽  
Pawan Kumar Ghimire ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Flood Risk ◽  
Comprehensive Approach ◽  
Glacial Lake ◽  
Flood Risk Assessment ◽  
Outburst Flood ◽  
Glacial Lake Outburst Flood

Erosion and morphology of a debris flow caused by a glacial lake outburst flood, Western Norway

Landslides ◽  
2008 ◽  
Vol 5 (3) ◽  
pp. 271-280 ◽  
Author(s):  
Hedda Breien ◽  
Fabio V. De Blasio ◽  
Anders Elverhøi ◽  
Kaare Høeg
Keyword(s):  
Debris Flow ◽  
Glacial Lake ◽  
Outburst Flood ◽  
Western Norway ◽  
Glacial Lake Outburst Flood

scholarly journals The 1988 glacial lake outburst flood in Guangxieco Lake, Tibet, China

2014 ◽  
Vol 14 (11) ◽  
pp. 3065-3075 ◽  
Author(s):  
J.-J. Liu ◽  
Z.-L. Cheng ◽  
Y. Li
Keyword(s):  
Debris Flow ◽  
Discharge Rate ◽  
Glacial Lake ◽  
Outburst Flood ◽  
Field Surveys ◽  
Terminal Moraine ◽  
Viscous Debris Flow ◽  
Local Residents ◽  
Glacial Lake Outburst Flood ◽  
Major Factors

Abstract. The 1988 glacial lake outburst flood (GLOF) in Guangxieco Lake is studied based on geomorphological evidence, interviews with local residents, field surveys in 1990 and 2007, and satellite images from different years. The findings are as follows. (1) The outburst event was caused by two major factors, namely, intense pre-precipitation and persistent high temperatures before the outburst and the low self-stability of the terminal moraine dam as a result of perennial piping. (2) The GLOF, with the peak discharge rate of 1270 m3 s−1, evolved along Midui Valley in the following order: sediment-laden flow, viscous debris flow, non-viscous debris flow, and sediment-laden flood, which was eventually blocked by Palongzangbu River. (3) A comparison between the conditions during the outburst in 1988 and the present conditions suggests a small possibility of a future outburst unless drastic changes occur in landscape and climate. Reconstructing the outburst conditions and the GLOF processes is helpful in assessing a potential outburst in glacier lakes in Tibet.

Methods for Debris Flow Hazard and Risk Assessment

2013 ◽  
pp. 133-177 ◽  
Author(s):  
Byron Quan Luna ◽  
Jan Blahut ◽  
Mélanie Kappes ◽  
Sami Oguzhan Akbas ◽  
Jean-Philippe Malet ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Debris Flow ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment ◽  
Debris Flow Hazard

scholarly journals Assessment of Hazard and Risk Related Activities at Npdc-Ogini Oil Field Flow Station, Okpaile in Isoko North, Delta State, Nigeria

2021 ◽  
pp. 17-35
Author(s):  
Asomaku Sunny Oghenefegor ◽  
Bolaji B. Babatunde ◽  
Wali Elekwachi ◽  
O. Emelu Victoria
Keyword(s):  
Risk Assessment ◽  
Secondary Data ◽  
Oil Field ◽  
Working Environment ◽  
Regulatory Agencies ◽  
Risk Level ◽  
Microsoft Excel ◽  
Hazard And Risk ◽  
Oil Gas ◽  
Safe Working

The activities of oil, Gas and energy contains numerous hazards which could lead to multiple disasters such as loss of capital, damage to reputation, and also degrading the environment. The Essence of job hazards analysis and risk assessment is to design a safe working environment and to control and reduced potential hazards.  Both primary and secondary data sources were employed in this study. Topographic statistics were also obtained from goggle earth and STRM (30M x 30M resolution) download from the United State Geological Survey. Questionnaires were administered to 100 people from 3 different department at NPDC-Ogini flow station in a confidential manner. A descriptive statistics such as mean, mode, median and standard deviation were used through the Statistical Package for Social Sciences (SPSS) Version 20.2 and Microsoft Excel 2007 software to analyze the data generated. Inferential statistics were used to test the hypothesis.  The hypothesis were tested using analysis of variance (ANOVA). The study has identified associated hazards and the risk level attached to the confirmed activities of Ogini field flow station. The analysis show that the F. calculated value was 0.759 and the F-table value was 0.471. Since the F- table value is less than the F-calculated value .The result of the hypothesis has also shown that there is no significant relationship between job hazards analysis and risk assessment of the flow station activities. Companies in this sector should have a proactive thinking and attitude towards all activities and also have a reasonable level of preparedness and preparedness plans in place in case of any incidence. If these hazards are properly managed and controlled with all measures in place and also adhering to all regulatory agencies both locally and internationally, the companies will achieve a zero goal in incidence and accidents.

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