scholarly journals Sequential Damming Induced Winter Season Flash Flood in Uttarakhand Province of India

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Piyoosh Rautela ◽  
Sushil Khanduri ◽  
Surabhi Kundalia ◽  
Girish Chandra Joshi ◽  
Rahul Jugran
Keyword(s):  
Risk Assessment ◽  
Flash Flood ◽  
Winter Season ◽  
Warning System ◽  
Disaster Risk ◽  
Infrastructure Projects ◽  
Indian Himalaya ◽  
The North ◽  
Main River ◽  
Close Proximity

204 persons were killed while two hydropower projects located in close proximity at Rishiganga (13.2 MW), and Tapoban (520 MW) were damaged in Dhauliganga flood of February 7, 2021 in the Indian Himalaya. This incidence occurred during the winter season when the discharge of the glacier fed rivers is minimal, and no rain was experienced in the region around the time of the flood. Despite discharge of the main river, Rishiganga, not involved in the flood due to damming upstream of its confluence with Raunthi Gadhera, based on field evidences massive volume of around 6 million cu m water involved in this flood is attributed to sequential intermittent damming at three different places; (i) Raunthi Gadhera was dammed first in its upper reaches, (ii) Rishiganga river was then dammed to the north of Murunna, and (iii) finally Dhauliganga river was dammed around Rini village to the upstream of its confluence with Rishiganga river. Lacking warning system only enhanced the flood-induced devastation. Legally binding disaster risk assessment regime, together with robust warning generation, and dissemination infrastructure are therefore recommended for all major infrastructure projects.

scholarly journals Sectoral and Livelihood Vulnerability to Climate Risk in Indian Himalaya: A Case Study of Almora District of Uttarakhand

2020 ◽  
Vol 4 (7) ◽  
pp. 59-66
Keyword(s):  
Risk Reduction ◽  
Disaster Risk Reduction ◽  
Flash Flood ◽  
Group Discussion ◽  
Climate Change Impacts ◽  
Disaster Risk ◽  
Climatic Data ◽  
Indian Himalaya ◽  
Climate Resilience ◽  
Almost All

Climate change impacts the society by aggravating related hazards. India, due to its varied geographical and climatic attributes and diverse socio-economic reasons, faces almost all kinds of disasters distantly or closely related to change in climates. Regions of Indian Himalaya, especially in Uttarakhand, are known to suffer the brunt of climate or water related disasters very frequently e.g. 2013’s devastating flash flood at Kedarnath, Uttarakhand. India is a signatory of the Sendai Framework for Disaster Risk Reduction and has hosted the 7 th Asian Ministerial Conference on Disaster Risk Reduction (AMCDRR) and organized its 2nd National Platform on Disaster Risk Reduction (NPDRR) during recent years (2015, 2016). These policy regimes advocate climate resilient development through policy planning and grassroots implementation of programmes. Objective of this study is to analyze climatic data projections and risks with regard to extreme events in Almora District, Uttarakhand, India, through learning sectoral and livelihood vulnerabilities of this region. Methodology involved policy and vulnerability analysis through structured and semi-structured questionnaires, focus group discussion and shared learning, with key line Departments and key stakeholders. Study revealed a range of precipitation and temperature level changes and linkages with increase in disaster related losses and damages. Key Sectoral Vulnerabilities & livelihood challenges have been identified in the Almora District. Paper suggests a policy analysis framework and integration of climate resilience and disaster management into development paradigms through plans, policies and processes of key sectors and departments.

Risk Assessment in Offshore Salt Caverns to Store CO2

2019 ◽  
Author(s):  
Marco Aurelio Pestana ◽  
Carlos Henrique Bittencourt Morais ◽  
Alvaro Maia da Costa ◽  
Camila Brandão ◽  
Marcelo Ramos Martins
Keyword(s):  
Risk Assessment ◽  
Deep Water ◽  
Winter Season ◽  
Salt Cavern ◽  
The North ◽  
Energy Demands ◽  
Conceptual Engineering ◽  
Peak Energy ◽  
Gas Consumption ◽  
Salt Caverns

Abstract Although factual experience of developing offshore salt cavern to CO2 disposal in ultra-deep water is unprecedent, the theme has been gaining relevant attention in Brazil, fueled by the challenges imposed by oil production on the Pre-Salt reservoirs. It is true that some authors have conducted researches related to CO2 disposal on onshore salt caverns, but most of the works regarding salt cavern are related to onshore constructions that are used as methane store to supplement gas consumption during the peak energy demands that historically occurs during the winter season in the North hemisphere. This paper aims to contribute for CO2 disposal research, describing the results obtained from the application of a Preliminary Risk Analysis (PRA) during the conceptual engineering phase of an offshore salt cavern to store CO2 in Brazilian Pre-Salt.

scholarly journals A Vulnerability Curve Method to Assess Risks of Climate-Related Hazards at County Level

Atmosphere ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1022
Author(s):  
Guizhen Guo ◽  
Lulu Liu ◽  
Yuqing Li ◽  
Jiangbo Gao ◽  
Sen Lin ◽  
...  
Keyword(s):  
Risk Assessment ◽  
High Risk ◽  
Meteorological Data ◽  
Disaster Risk ◽  
Scientific Basis ◽  
County Level ◽  
Prevention Measures ◽  
The South ◽  
The North ◽  
Disaster Risk Assessment

A comprehensive risk assessment of different types of natural disasters at the county level can promote quantitative disaster risk assessment and can provide a scientific basis for the formulation of disaster prevention measures. Focusing on climate-related hazards and based on natural disaster risk assessment theories and methods, this study integrates disaster statistics, meteorological data, geographic information, and other multivariate data to quantify the hazards of various disasters and the vulnerability and exposure of hazard-bearing bodies and conducts an integrated assessment of comprehensive risks of multiple climate-related hazards in Cangnan County, Zhejiang Province. Typhoon disaster risk is high in the central and northern parts of this county and low in its surroundings, with high-risk areas mainly distributed in Lingxi Town to the north. The comprehensive risk distribution patterns of drought and flood disasters in Cangnan County are similar: low in the south and high in the north. With the method of standard deviation, the comprehensive risk of multiple climate-related hazards in Cangnan County shows a distribution pattern of being low in the south and high in the north, with high risk in the northeast and low risk in the northwest and south.

scholarly journals Landslide Risk Assessment for Designing Monitoring and EarlyWarning System

2019 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
Tuan Anh Bui ◽  
Teuku Faisal Fathani ◽  
Wahyu Wilopo
Keyword(s):  
Risk Assessment ◽  
Groundwater Level ◽  
Rainy Season ◽  
Preliminary Investigation ◽  
Mass Movement ◽  
Warning System ◽  
Landslide Risk ◽  
The North ◽  
Before And After ◽  
The Hill

Landslide is the most frequent natural disaster in Yogyakarta, Indonesia. In the mid-March 2018, a few cracks appeared in the north of the hill in the Pendoworejo Village, Kulon Progo District, Yogyakarta Special Province. The landslide movement of this area still threatens the residents and makes them evacuated due to their fear upon potential landslide disaster. In order to reduce the risk, landslide investigation and risk assessment were conducted. The stability analysis focused on the relationship of the displacement,the velocity and the fluctuation of groundwater level due to the rainfall intensity. Then, a monitoring and warning system was designed as a non-structural mitigation effort. Based on the preliminary investigation on April 2018, there was no evidence of mass movement on the west and south part of the hill. On the other hand, the north part area was estimated to have risk as indicated by the occurrence of many cracks. Based on the result of analysis, the fluctuation of the groundwater level rose or dropped substantially before and after heavy rainfall. In the rainy season, the velocity and the displacement increased slightly in the first three months and grew rapidly afterward. In fact, the landslide risk increased in every rainy season. Therefore, the risk could be more dangerous in the future.

Sources of Chlorophenolic Compounds to the Fraser River Estuary

1988 ◽  
Vol 23 (1) ◽  
pp. 55-68 ◽  
Author(s):  
J. H. Carey ◽  
J. H. Hart
Keyword(s):  
River Flow ◽  
River Estuary ◽  
Low Flow ◽  
Fraser River ◽  
Pulp Mills ◽  
Flow Conditions ◽  
Downstream Site ◽  
Upstream Site ◽  
The North ◽  
Main River

Abstract The identity and concentrations of chlorophenolic compounds in the Fraser River estuary were determined under conditions of high and low river flow at three sites: a site upstream from the trifurcation and at downstream sites for each main river arm. Major chlorophenolics present under both flow regimes were 2,4,6-trichlorophenol (2,4,6-TCP), 2,3,4,6-tetrachlorophenol (2,3,4,6-TeCP), pentachlorophenol (PCP), tetrachloroguaiacol (TeCG) and a compound tentatively identified as 3,4,5-trichloroguaiacol (3,4,5-TCG). Under high flow conditions, concentrations of the guaiacols were higher than any of the Chlorophenols and concentrations of all five chlorophenolics appeared to correlate. Under low flow conditions, concentrations of chloroguaiacols were higher than Chlorophenols at the upstream site and at the downstream site on the Main Arm, whereas at the downstream site on the North Arm, concentrations of 2,3,4,6-TeCP and PCP were higher than the chloroguaiacols in some samples. Overall, the results indicate that pulp mills upstream from the estuary are important sources of chlorophenolics to the estuary under all flow conditions. Additional episodic inputs of 2,3,4,6-TeCP and PCP from lumber mills occur along the North Arm. When these inputs occur, they can cause the concentrations of Chlorophenols in the North Arm to exceed provisional objectives. If chloroguaiacols are included as part of the objective, concentrations of total chlorophenolics in water entering the estuary can approach and exceed these objectives, especially under low flow conditions.

scholarly journals Disaster Risk Assessment of Transmission Lines Based on TOPSIS

2019 ◽  
Vol 533 ◽  
pp. 012001
Author(s):  
Taowei Chen ◽  
Ling Zhu ◽  
Qiao Xia ◽  
Honglei Deng ◽  
Chen Zhou
Keyword(s):  
Risk Assessment ◽  
Transmission Lines ◽  
Disaster Risk ◽  
Disaster Risk Assessment
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