Working Thesis Title:聽
Coseismic river response to fault surface deformation
My research involves quantifying and modelling the process of coseismic river response (CRR) to surface rupturing earthquake events. Rivers underlain by active faults are vulnerable to the effects of surface rupturing displacements that may reduce the ability of the affected channel to convey all incoming streamflow. A river may respond by flooding outside of its channel and may sometimes establish of a new channel within the floodplain; a process otherwise referred to as avulsion. Analysis of global case allows me to explore the site-specific susceptibility factors linked to CRR occurrence and hazard potential. Site-specific flood hazard is explored via a new digital modelling technique capable of simulating fault displacements within river channels. Combining this technique with 2D hydrodynamic flood modelling (calibrated against a real coseismic avulsion event) allows me to further explore how future surface rupturing fault ruptures may influence flood hazard within New Zealand.聽
Degrees Held:
BSc in Geology
Professional History:
Teaching Assistant (School of Earth and Environment), 2023, 2024
Earthquake Specialist (IAG, 2014 - 2021)
Complex Claims Analyst (The Earthquake Commission, 2012 鈥 2014)聽
Publications:
Erin McEwan et al., Coseismic river avulsion on surface rupturing faults: Assessing earthquake-induced flood hazard. Sci. Adv.9,eadd2932(2023).DOI:10.1126/sciadv.add2932
Selected Conference Proceeding:
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2023, 鈥淓xamining coseismic river response to surface-rupturing fault displacement鈥, QuakeCore annual meeting, poster presentation.
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2023, 鈥淐oseismic River Flooding and Avulsion:
A new approach for modelling earthquake-induced flood hazards鈥, Centre for Land and Surface Hazards (CLaSH) land surface hazards modelling expo, oral presentation.
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2022. 鈥淓arthquake induced river avulsion along surface rupturing faults: A new approach to earthquake and flood hazard management鈥, American geophysical union (AGU) annual conference, poster presentation
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2022, 鈥淚nvestigating coseismic avulsion hazards:
A new approach for earthquake and flood hazard assessment鈥, Geoscience Society of New 茄子视频app官网(GSNZ), oral presentation.
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2022, 鈥淐oseismic river avulsion on surface rupturing faults:
A new approach for earthquake and flood hazard assessment鈥, Rivers group conference, poster presentation.
Presentations:
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2024, 鈥淐oseismic river response (CRR) on surface rupturing faults: a review and analysis of global case studies鈥. QuakeCore surface rupture and slope stability meeting, oral presentation.
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2023, Coseismic River Flooding and Avulsion:
A new approach for modelling earthquake-induced flood hazards. Rapid characterisation of earthquake and tsunami (RCET) workshop, oral presentation.
McEwan, E., Stahl, T., Howell, A., Langridge, L., Wilson, M. 2023. Investigating and modelling fault rupture induced river avulsions (FIRA), Toka Tu Ake the Earthquake Commission staff scientific outreach program, oral presentation.
