Landslide hazards around Uttarkashi township, Garhwal Himalaya, after the tragic flash flood in June 2013

Gupta, Vikram; Nautiyal, Hemlata; Kumar, Vipin; Jamir, Imlirenla; Tandon, Ruchika Sharma

doi:10.1007/s11069-015-2048-4

Cited by 23 publications

(3 citation statements)

References 3 publications

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“…The first and third patterns may be understood in the context of the orographic effect of the HHC whereas the second pattern pertains to spatially varying influence of summer monsoon system. The higher contribution of summer monsoon in the orographic front has also been observed in other parts of the Himalaya (Gupta, Nautiyal, Kumar, Jamir, & Tandon, ). It is also evident from Figure that rainfall in the orographic front comprises more uncertainty than that of the orographic interior.…”

Section: Resultssupporting

confidence: 62%

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

2018

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Landslides have been considered widely as principal mass wasting agents in the valleys experiencing varied influence of tectonics and climate. However, pattern of landslides is rarely addressed in the literature that may act as a surface manifestation of interrelationship of tectonics, climate, and lithology. Here, we have attempted to understand such interrelationship in the context of landslide distribution pattern in the Satluj valley, Northwest Himalaya. Geomorphic indices such as steepness index, valley floor width to valley height ratio, and topographic swath profile were used for tectonic inference. Daily rainfall data of the year 2000-2016, using 5 rain-gauge stations and swath profile of Normalized Difference Vegetation Index, were used to deduce spatial variability of climate. Influence of lithological variability and regional faults; Sangla Detachment, Main Central Thrust, and Munsiari Thrust on the landslide distribution are also inferred. A total of 55 landslides (20 rock avalanche, 19 debris slides, and 16 rockfalls) are found to exist in 6 clusters along 130 km stretch of the Satluj valley. These landslides, covering a total area (A) and volume (V) of 1.05 × 10 7 m 2 and 4.4 × 10 7 m 3 , respectively, are also noted to follow a power law (R 2 = 0.8) and result in a scaling relationship of V = (0.180)A 1.208 .

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Section: Resultssupporting

confidence: 62%

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

2018

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“…GLOFs can erode the toes of hill slopes downstream, adding sediment to the river and raising the riverbed, which in turn can lead to blockages in the river downstream and the formation of small lakes, which themselves can burst out leading to further toe slope erosion downstream. These types of cascading process have been seen during the 1970 flood in the Alaknanda river in Uttarakhand (Wasson and Newell 2015), the 2015 Gorkha earthquake in Nepal (Kargel et al 2016), following glacial lake outburst floods in Nepal and Bhutan (Higaki and Sato 2012), and following flash floods (Gupta et al 2016).…”

Section: Linking Primary and Secondary Hazards -The Mountain Perspectivementioning

confidence: 99%

Disaster Risk Reduction and Building Resilience in the Hindu Kush Himalaya

Vaidya

Shrestha

Nasab

et al. 2019

The Hindu Kush Himalaya Assessment

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“…In the recent times incidences of hydro-metrological disaster as glacier lake outburst floods (GLOFs), cloudburst, flash floods, landslides and debris flow are increased many fold and create an alarming situation in front of the public, tourist, pilgrims and government of Uttarakhand. Asi Ganga cloudburst in August, 2012; Ukhimath cloudburst in September, 2012; Kedarnath cloudburst in June 2013 and Bastari cloudburst in July 2016 are some of the examples of recent hydro-metrological disaster in Uttarakhand Himalaya [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Hydro-metrological Disaster Affected Malpa and Mangti Area, Pithoragarh District, Uttarakhand, India

Ks¹,

Khanduri²

2018

J Geogr Nat Disast

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In the previous some years, the risk of water induced disasters has increased in the hilly terrain like Uttarakhand as a result of deforestation, increasing anthropogenic activities as well as climate change. In Uttarakhand Himalaya cloudburst and extreme precipitation events have been brought down huge amount of debris with large volume of water in the form of debris flow and flash flood. Almost every year several parts of Uttarakhand Himalaya experience hydro-metrological disaster as cloudburst, flash floods and debris flow. Presence of fractured, jointed and sheared rock mass due to vicinity of Main Central Thrust (MCT) zone and highly weathered state of rock played significant role for the slope instability in the area. This year (2017) in Uttarakhand, Malpa and Mangti area, Pithoragarh district and Kotdwar (Pauri district) have been severely damaged by cloudburst and subsequent landslides and flash floods. In August 2017, Kailash-Mansarover Pilgrimage road and pedestrian route were damaged and blocked at several locations and Yatra was suspended till further notice. Simkhola and Malpa Gad are tributaries of Kali river and meet at right bank of the river, due to heavy localized precipitation or cloudburst Kali river was reportedly flowing at a dangerously high level. Cloudburst is a distinctive phenomenon especially with respect to fragile and unstable Himalayan terrain, although climatic factor as incessant and torrential rainfall is the major triggering factor responsible for this phenomenon but there have always been several other factors which are also responsible for the large scale damage and destruction in a particular location such as geological/structural, geo-morphological as well as anthropogenic factors also enhance scale of damage and destruction. In the present communication an attempt is made to assess the impact of hydro-metrological disaster and identify the causes behind damage and destruction.

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Landslide hazards around Uttarkashi township, Garhwal Himalaya, after the tragic flash flood in June 2013

Cited by 23 publications

References 3 publications

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

Disaster Risk Reduction and Building Resilience in the Hindu Kush Himalaya

Investigation of Hydro-metrological Disaster Affected Malpa and Mangti Area, Pithoragarh District, Uttarakhand, India

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