Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica
Mt Erebus is a volcano in the Ross Sea that has been active since its first sighting in 1841 by Captain James Clark Ross. It consistently maintains an eruption plume and convecting lava lake of phonolitic composition, and regularly erupts as minor strombolian events. Prior to observations of Erebus...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/10092/14121 |
id |
ftunivcanter:oai:ir.canterbury.ac.nz:10092/14121 |
---|---|
record_format |
openpolar |
spelling |
ftunivcanter:oai:ir.canterbury.ac.nz:10092/14121 2023-05-15T13:49:25+02:00 Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica Asher, Cameron 2014 application/pdf http://hdl.handle.net/10092/14121 English en eng http://hdl.handle.net/10092/14121 All Rights Reserved Theses / Dissertations 2014 ftunivcanter 2022-09-08T13:34:50Z Mt Erebus is a volcano in the Ross Sea that has been active since its first sighting in 1841 by Captain James Clark Ross. It consistently maintains an eruption plume and convecting lava lake of phonolitic composition, and regularly erupts as minor strombolian events. Prior to observations of Erebus beginning, major eruption events have occurred, with 2 plinian eruptions depositing ash up to 200km from the vent, and >43 eruptions depositing ash at least 7-12km from source. Using this information, three volcanic eruptions are modelled to predict ash fall using various wind speeds, and assuming an eruption plume of 7000m, and an erupted mass of 1x1010kg. It is observed that debris flows will most likely follow glacier paths as these already follow the lowest topographical route, while the eruption modelled with have little impact on Scott Base or McMurdo Station, unless optimal wind conditions occur. Other/Unknown Material Antarc* Antarctica Ross Sea University of Canterbury, Christchurch: UC Research Repository Ross Sea McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Scott Base ENVELOPE(166.766,166.766,-77.849,-77.849) Lava Lake ENVELOPE(-128.996,-128.996,55.046,55.046) |
institution |
Open Polar |
collection |
University of Canterbury, Christchurch: UC Research Repository |
op_collection_id |
ftunivcanter |
language |
English |
description |
Mt Erebus is a volcano in the Ross Sea that has been active since its first sighting in 1841 by Captain James Clark Ross. It consistently maintains an eruption plume and convecting lava lake of phonolitic composition, and regularly erupts as minor strombolian events. Prior to observations of Erebus beginning, major eruption events have occurred, with 2 plinian eruptions depositing ash up to 200km from the vent, and >43 eruptions depositing ash at least 7-12km from source. Using this information, three volcanic eruptions are modelled to predict ash fall using various wind speeds, and assuming an eruption plume of 7000m, and an erupted mass of 1x1010kg. It is observed that debris flows will most likely follow glacier paths as these already follow the lowest topographical route, while the eruption modelled with have little impact on Scott Base or McMurdo Station, unless optimal wind conditions occur. |
format |
Other/Unknown Material |
author |
Asher, Cameron |
spellingShingle |
Asher, Cameron Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
author_facet |
Asher, Cameron |
author_sort |
Asher, Cameron |
title |
Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
title_short |
Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
title_full |
Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
title_fullStr |
Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
title_full_unstemmed |
Modelling Ash Fall and Debris Flow Hazards of Mt Erebus, Antarctica |
title_sort |
modelling ash fall and debris flow hazards of mt erebus, antarctica |
publishDate |
2014 |
url |
http://hdl.handle.net/10092/14121 |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(166.766,166.766,-77.849,-77.849) ENVELOPE(-128.996,-128.996,55.046,55.046) |
geographic |
Ross Sea McMurdo Station Scott Base Lava Lake |
geographic_facet |
Ross Sea McMurdo Station Scott Base Lava Lake |
genre |
Antarc* Antarctica Ross Sea |
genre_facet |
Antarc* Antarctica Ross Sea |
op_relation |
http://hdl.handle.net/10092/14121 |
op_rights |
All Rights Reserved |
_version_ |
1766251337117335552 |