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Physical-scale modelling of jökulhlaups (glacial outburst floods) with contrasting hydrograph shapes
  • Physical-scale modelling of jökulhlaups (glacial outburst floods) with contrasting hydrograph shapes
  • The aim of this paper is first to describe the laboratory procedure by which field jökulhlaups were replicated using physical-scale modelling techniques, and second to investigate whether the modelled jökulhlaups characterized by contrasting
  • hydrograph shapes produced different sedimentary and geomorphic impacts. For this purpose, an exponentially rising and a linearly rising jökulhlaup were modelled.
Volcanic hazards and jökulhlaups in Iceland
  • Volcanic hazards and jökulhlaups in Iceland
  • Activité volcanique ; Coulée boueuse ; Coulée de lave ; Eau de fonte ; Glaciaire ; Glacier ; Ile ; Inondation ; Islande ; Jökulhlaup ; Risque naturel ; Volcanisme
  • Iceland is one of the youngest territory of the Earth's surface. Together with glaciers volcanic activities contribute to another risk process called jökulhlaup. It is a large-scale flood event generated by a sudden drainage of the water contained
The cause of jokulhlaups in the Skafta river, Vatnajokull
  • The cause of jokulhlaups in the Skafta river, Vatnajokull
  • Activité géothermique ; Crue ; Débâcle ; Ecoulement sous-glaciaire ; Glacier ; Géographie de l'Europe ; Islande ; Jokulhlaup ; Skafta
Ice fracturing during jökulhlaups : implications for englacial floodwater routing and outlet development
  • Ice fracturing during jökulhlaups : implications for englacial floodwater routing and outlet development
  • Crue glaciaire ; Eau de fonte ; Fracture ; Glacier ; Glaciologie ; Islande ; Jökulhlaup ; Modèle
  • This paper presents new evidence for spatial and temporal changes in intraglacial floodwater routing during jökulhlaups (glacial outburst floods); secondly, it identifies and explains the mechanisms controlling the position and morphology
  • of supraglacial jökulhlaup outlets; and finally, it presents a conceptual model of the controls on supraglacial outbursts. Field observations are presented from 2 Icelandic glaciers.
Controls on englacial sediment deposition during the November 1996 Jökulhlaup, Skeidarárjökull, Iceland
  • Controls on englacial sediment deposition during the November 1996 Jökulhlaup, Skeidarárjökull, Iceland
  • Date 1996 ; Eau de fonte ; Fluvioglaciaire ; Fracture ; Glaciaire ; Islande ; Jökulhlaup ; Modèle
  • This paper presents sedimentary evidence for rapid englacial debris entrainment during a recent jökulhlaup, which provides insight into processes of debris entrainment and post-flood landform genesis. This paper aims to : identify and explain
  • controls on the deposition of englacial flood sediments in relation to known supraglacial outlets; and present a qualitative model for englacial sediment deposition during jökulhlaups.
Discharge and suspended sediment dynamics during two jökulhlaups in the Skaftá river, Iceland
  • Discharge and suspended sediment dynamics during two jökulhlaups in the Skaftá river, Iceland
  • The AA. present detailed data on jökulhlaup discharge and water quality from an intensive monitoring and sampling programme at 2 sites in summer 1997 when 2 jökulhlaups (glacier outburst floods) occurred. Evidence is discussed that supports
  • the origin of both jökulhlaups being subglacial reservoirs, produced over several months by subglacial geothermal activity. The research illustrates the value of integrating high-resolution, multi-point field monitoring of meteorological, hydrological
  • , hydrochemical, geomorphological and seismological data for understanding the dynamics, significance and downstream translation of jökulhlaups.
Rummal Graenalons og breytingar a staerd og tidni jokulhlaupa The volume of Graenalon and changes in the size and frequency of Jokulhlaups
  • Rummal Graenalons og breytingar a staerd og tidni jokulhlaupa The volume of Graenalon and changes in the size and frequency of Jokulhlaups
  • Cartographie d'un lac juxtaglaciaire barré par le Skeidararjokull. Données sur les vidanges (jokulhlaups) des dernières décennies. - (JCB)
Sedimentological and geomorphological impacts of the jökulhlaup (glacial outburst flood) in january 2002 at Kverkfjöll, northern Iceland
  • Sedimentological and geomorphological impacts of the jökulhlaup (glacial outburst flood) in january 2002 at Kverkfjöll, northern Iceland
  • This study provides a clearer understanding of hydrological and sedimentological processes and mechanisms operating during jökulhlaups (glacial outburst floods), and helps to identify flood hazards more accurately, which is fundamental for hazard
The 1994 jökulhlaup at Farrow Creek, British Columbia, Canada
  • The 1994 jökulhlaup at Farrow Creek, British Columbia, Canada
  • This paper documents a previously unreported jökulhlaup from an unnamed lake at the margin of Goddard Glacier in the southern Coast Mountains of British Columbia. This event is of interest because Goddard Lake probably first formed in the middle
  • of this century, and it has not refilled since the outburst in July 1994. In addition, the jökulhlaup is the largest flood in the valley below Goddard Glacier in the last century or more, and caused long-lasting changes to the channel and floodplain of Farrow
Jökulhlaup-related ice fracture and supraglacial water release during the November 1996 jökulhlaup, Skeiõarárjökull, Iceland
  • Jökulhlaup-related ice fracture and supraglacial water release during the November 1996 jökulhlaup, Skeiõarárjökull, Iceland
  • This paper examines a large supraglacial depression associated with supraglacial discharge during the November 1996 jökulhlaup. This paper aims to describe the morphology and structural features associated with this large supraglacial depression
Jökulhlaup initiation by ice-dam flotation : the significance of glacier debris content
  • Jökulhlaup initiation by ice-dam flotation : the significance of glacier debris content
  • Ice-dam flotation is a commonly described mechanism for the initiation of jökulhlaups (catastrophic floods)from ice-dammed lakes, but predictions of the critical lake depth required for flotation often differ from the actual lake depth at which
Controls on the formation and sudden drainage of glacier-impounded lakes : implications for jökulhlaup characteristics
  • Controls on the formation and sudden drainage of glacier-impounded lakes : implications for jökulhlaup characteristics
  • the relationship between controls on ice-dammed lake drainage and glacier outburst flood or jökulhlaup character.
Geomorphic impact and rapid subsequent recovery from the 1996 Skeioarársandur jökulhlaup, Iceland, measured with multi-year airborne lidar
  • Geomorphic impact and rapid subsequent recovery from the 1996 Skeioarársandur jökulhlaup, Iceland, measured with multi-year airborne lidar
  • Central transect : 1996, 1997 et 2001. Changements post-jökulhlaup (1997-2001).
Periodic Jokulhlaups from Pleistocene glacial Lake Missoula. New evidence from varved sediment in northern Idaho and Washington
  • Periodic Jokulhlaups from Pleistocene glacial Lake Missoula. New evidence from varved sediment in northern Idaho and Washington
  • Channeled Scabland ; Débâcle glaciaire ; Etats-Unis ; Glaciolacustre ; Géographie de l'Amérique ; Géomorphogenèse ; Idaho ; Jokulhlaup ; Lac ; Lac glaciaire ; Lake Missoula ; Montagne ; Paléoglaciologie ; Paléolac ; Pléistocène supérieur
Lake Vostok behaves like a captured lake and may be near to creating an Antarctic jökulhlaup
  • Lake Vostok behaves like a captured lake and may be near to creating an Antarctic jökulhlaup
  • the East Antarctic ice sheet. It is showed that Lake Vostok agrees with this hypothesis. The result also implies that the lake may well be of pre-glacial origin, and that it may have experienced jökulhlaups during previous interglacials.
The record of jökulhlaups from Summit Lake, northwestern British Columbia
  • The record of jökulhlaups from Summit Lake, northwestern British Columbia
  • Le lac Summit, qui est retenu par le glacier Salmon, est le plus grand lac de barrage glaciaire auto-drainé du Canada. La première libération soudaine d'eau de fonte du glacier (jökulhlaup) est survenue en 1961. Les fluctuations rapides du niveau de
  • l'eau, associées à l'assèchement et au remplissage annuel du lac Summit, sont responsables du détachement des nombreux icebergs dérivés du barrage formé par le glacier Salmon; actuellement ils engorgent la surface du lac. Le cycle actuel des jökulhlaups
A jökulhlaup from a Laurentian captured ice shelf to the Gulf of Mexico could have caused the Bølling warming
  • A jökulhlaup from a Laurentian captured ice shelf to the Gulf of Mexico could have caused the Bølling warming
  • Atlantique ; Changement climatique ; Circulation océanique ; Courant marin ; Débâcle ; Déglaciation ; Eau de fonte ; Glaciation ; Golfe du Mexique ; Interaction océan-atmosphère ; Jökulhlaup ; Niveau marin ; Quaternaire ; Réchauffement climatique
  • This paper presents a hypothetical chain of events, building on the published literature and simple calculations, to investigate whether the order of magnitude is reasonable. The hypothesis is that a jökulhlaup from a Laurentian captured ice shelf
Subglacial water reservoirs, jokulhlaups and volcanic eruptions
  • Subglacial water reservoirs, jokulhlaups and volcanic eruptions
Chemical monitoring of jokulhlaup water in Skeidara and the geothermal system in Grimsvotn, Iceland
  • Chemical monitoring of jokulhlaup water in Skeidara and the geothermal system in Grimsvotn, Iceland
Recurring jοkulhlaups in Sälka, northern Sweden
  • This paper describes the glacier environment, compiles a jökulhlaup history for this site and presents optical and radar survey measurements used to map the glacier surface and bed to construct a map of hydraulic potential. The paper provides field
  • observations including measurements of 2 jökulhlaup events.