The influence of surficial features in lava flow modelling

Abstract Lava flows can cause substantial and immediate damage to the built environment and affect the economy and society over days through to decades. Lava flow modelling can be undertaken to help stakeholders prepare for and respond to lava flow crises. Traditionally, lava flow modelling is condu...

Full description

Bibliographic Details
Main Authors: Sophia W. R. Tsang, Jan M. Lindsay, Giovanni Coco, Natalia I. Deligne
Format: Article
Language:English
Published: BMC 2020-06-01
Series:Journal of Applied Volcanology
Subjects:
DEM
DSM
Online Access:http://link.springer.com/article/10.1186/s13617-020-00095-z
id doaj-1487a29ef3d645a2a05a4adda65b3582
record_format Article
spelling doaj-1487a29ef3d645a2a05a4adda65b35822020-11-25T03:54:42ZengBMCJournal of Applied Volcanology2191-50402020-06-019111210.1186/s13617-020-00095-zThe influence of surficial features in lava flow modellingSophia W. R. Tsang0Jan M. Lindsay1Giovanni Coco2Natalia I. Deligne3School of Environment, University of AucklandSchool of Environment, University of AucklandSchool of Environment, University of AucklandGNS ScienceAbstract Lava flows can cause substantial and immediate damage to the built environment and affect the economy and society over days through to decades. Lava flow modelling can be undertaken to help stakeholders prepare for and respond to lava flow crises. Traditionally, lava flow modelling is conducted on a digital elevation model, but this type of representation of the surface may not be appropriate for all settings. Indeed, we suggest that in urban areas a digital surface model may more accurately capture all of the obstacles a lava flow would encounter. We use three effusive eruption scenarios in the well-studied Auckland Volcanic Field (New Zealand) to demonstrate the difference between modelling on an elevation model versus on a surface model. The influence of surficial features on lava flow modelling results is quantified using a modified Jaccard coefficient. For the scenario in the most urbanised environment, the Jaccard coefficient is 40%, indicating less than half of the footprints overlap, while for the scenario in the least urbanised environment, the Jaccard coefficient is 90%, indicating substantial overlap. We find that manmade surficial features can influence the hazard posed by lava flows and that a digital surface model may be more applicable in highly modified environments.http://link.springer.com/article/10.1186/s13617-020-00095-zDEMDSMAuckland volcanic fieldLava flow hazard modellingBirkenheadMt. Eden
collection DOAJ
language English
format Article
sources DOAJ
author Sophia W. R. Tsang
Jan M. Lindsay
Giovanni Coco
Natalia I. Deligne
spellingShingle Sophia W. R. Tsang
Jan M. Lindsay
Giovanni Coco
Natalia I. Deligne
The influence of surficial features in lava flow modelling
Journal of Applied Volcanology
DEM
DSM
Auckland volcanic field
Lava flow hazard modelling
Birkenhead
Mt. Eden
author_facet Sophia W. R. Tsang
Jan M. Lindsay
Giovanni Coco
Natalia I. Deligne
author_sort Sophia W. R. Tsang
title The influence of surficial features in lava flow modelling
title_short The influence of surficial features in lava flow modelling
title_full The influence of surficial features in lava flow modelling
title_fullStr The influence of surficial features in lava flow modelling
title_full_unstemmed The influence of surficial features in lava flow modelling
title_sort influence of surficial features in lava flow modelling
publisher BMC
series Journal of Applied Volcanology
issn 2191-5040
publishDate 2020-06-01
description Abstract Lava flows can cause substantial and immediate damage to the built environment and affect the economy and society over days through to decades. Lava flow modelling can be undertaken to help stakeholders prepare for and respond to lava flow crises. Traditionally, lava flow modelling is conducted on a digital elevation model, but this type of representation of the surface may not be appropriate for all settings. Indeed, we suggest that in urban areas a digital surface model may more accurately capture all of the obstacles a lava flow would encounter. We use three effusive eruption scenarios in the well-studied Auckland Volcanic Field (New Zealand) to demonstrate the difference between modelling on an elevation model versus on a surface model. The influence of surficial features on lava flow modelling results is quantified using a modified Jaccard coefficient. For the scenario in the most urbanised environment, the Jaccard coefficient is 40%, indicating less than half of the footprints overlap, while for the scenario in the least urbanised environment, the Jaccard coefficient is 90%, indicating substantial overlap. We find that manmade surficial features can influence the hazard posed by lava flows and that a digital surface model may be more applicable in highly modified environments.
topic DEM
DSM
Auckland volcanic field
Lava flow hazard modelling
Birkenhead
Mt. Eden
url http://link.springer.com/article/10.1186/s13617-020-00095-z
work_keys_str_mv AT sophiawrtsang theinfluenceofsurficialfeaturesinlavaflowmodelling
AT janmlindsay theinfluenceofsurficialfeaturesinlavaflowmodelling
AT giovannicoco theinfluenceofsurficialfeaturesinlavaflowmodelling
AT nataliaideligne theinfluenceofsurficialfeaturesinlavaflowmodelling
AT sophiawrtsang influenceofsurficialfeaturesinlavaflowmodelling
AT janmlindsay influenceofsurficialfeaturesinlavaflowmodelling
AT giovannicoco influenceofsurficialfeaturesinlavaflowmodelling
AT nataliaideligne influenceofsurficialfeaturesinlavaflowmodelling
_version_ 1724472089012862976