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Assessing Sediment Pulse during an Extreme Hydrological Event in the Alaknanda Basin, Northwestern Himalaya, India.

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Title: Assessing Sediment Pulse during an Extreme Hydrological Event in the Alaknanda Basin, Northwestern Himalaya, India.
Authors: Devrani, Rahul1,2 (AUTHOR) rahuldevrani18@gmail.com, Singh, Vimal3 (AUTHOR), Mehta, Manish1 (AUTHOR), Ramanathan, A. L.2 (AUTHOR)
Source: Journal of the Geological Society of India. Jan2021, Vol. 97 Issue 1, p48-54. 7p.
Subject Terms: *Sediments, *Sediment transport, *Population, *Remote sensing
Geographic Terms: Srinagar (Jammu & Kashmir, India), Himalaya Mountains
Abstract: In the year 2013, the Northwestern Himalaya witnessed an extreme hydrological event that severely affected the upper Ganga Basin. The unexpected high sediment mobilisation in the basin affected the human population, infrastructure, and ecology in several reaches of the Ganga river and its tributaries. In an exceedingly affected reach, the Kedarnath valley, a considerable sediment volume (∼26243 × 104 m3) was mobilised during the 2013 extreme hydrological event. In the Srinagar valley, up to 50 × 104 m3 of legacy sediment was washed away during the same event. This sediment mobilisation generated sediment pulses in the affected region, which is assessed through remote sensing, field observations and existing literature, in the Kedarnath and Srinagar valleys. Results show that the evolution of translative, dispersive, and their combined sediment pulse pattern in both selected reaches of the upper Ganga Basin. The mountainous region of the upper Ganga basin has very few monitoring stations observing sediment movement, and data from such stations are mostly unavailable due to which our understanding of the sediment movement in the Himalaya remains very poor. Therefore, it is suggested that there is a need for detailed studies of the sediment transport mechanism in the Himalayan river basins especially during such extreme hydrological events when large volume of sediment is mobilised. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 148024375
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Assessing Sediment Pulse during an Extreme Hydrological Event in the Alaknanda Basin, Northwestern Himalaya, India.
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  Data: <searchLink fieldCode="AR" term="%22Devrani%2C+Rahul%22">Devrani, Rahul</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> rahuldevrani18@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Singh%2C+Vimal%22">Singh, Vimal</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mehta%2C+Manish%22">Mehta, Manish</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ramanathan%2C+A%2E+L%2E%22">Ramanathan, A. L.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Geological+Society+of+India%22">Journal of the Geological Society of India</searchLink>. Jan2021, Vol. 97 Issue 1, p48-54. 7p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Sediments%22">Sediments</searchLink><br />*<searchLink fieldCode="DE" term="%22Sediment+transport%22">Sediment transport</searchLink><br />*<searchLink fieldCode="DE" term="%22Population%22">Population</searchLink><br />*<searchLink fieldCode="DE" term="%22Remote+sensing%22">Remote sensing</searchLink>
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  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Srinagar+%28Jammu+%26+Kashmir%2C+India%29%22">Srinagar (Jammu & Kashmir, India)</searchLink><br /><searchLink fieldCode="DE" term="%22Himalaya+Mountains%22">Himalaya Mountains</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the year 2013, the Northwestern Himalaya witnessed an extreme hydrological event that severely affected the upper Ganga Basin. The unexpected high sediment mobilisation in the basin affected the human population, infrastructure, and ecology in several reaches of the Ganga river and its tributaries. In an exceedingly affected reach, the Kedarnath valley, a considerable sediment volume (∼26243 × 104 m3) was mobilised during the 2013 extreme hydrological event. In the Srinagar valley, up to 50 × 104 m3 of legacy sediment was washed away during the same event. This sediment mobilisation generated sediment pulses in the affected region, which is assessed through remote sensing, field observations and existing literature, in the Kedarnath and Srinagar valleys. Results show that the evolution of translative, dispersive, and their combined sediment pulse pattern in both selected reaches of the upper Ganga Basin. The mountainous region of the upper Ganga basin has very few monitoring stations observing sediment movement, and data from such stations are mostly unavailable due to which our understanding of the sediment movement in the Himalaya remains very poor. Therefore, it is suggested that there is a need for detailed studies of the sediment transport mechanism in the Himalayan river basins especially during such extreme hydrological events when large volume of sediment is mobilised. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=148024375
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      – Type: doi
        Value: 10.1007/s12594-021-1624-3
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 48
    Subjects:
      – SubjectFull: Sediments
        Type: general
      – SubjectFull: Sediment transport
        Type: general
      – SubjectFull: Population
        Type: general
      – SubjectFull: Remote sensing
        Type: general
      – SubjectFull: Srinagar (Jammu & Kashmir, India)
        Type: general
      – SubjectFull: Himalaya Mountains
        Type: general
    Titles:
      – TitleFull: Assessing Sediment Pulse during an Extreme Hydrological Event in the Alaknanda Basin, Northwestern Himalaya, India.
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            NameFull: Devrani, Rahul
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            NameFull: Singh, Vimal
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            NameFull: Mehta, Manish
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            NameFull: Ramanathan, A. L.
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            – D: 01
              M: 01
              Text: Jan2021
              Type: published
              Y: 2021
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              Value: 97
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            – TitleFull: Journal of the Geological Society of India
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