Tiegan Elizabeth Hobbs

Tiegan Elizabeth Hobbs
Natural Resources Canada | NRCan · Geological Survey of Canada

Professor

Publications

Publications (31)
Conference Paper
Full-text available
Canada's earthquake scenario catalogue is a nationwide collection of possible earthquake rupture scenarios that allows us to understand which populations and assets will be impacted by the rupture of particular faults (or their segments). In the past, scenarios were often generated on an ad hoc basis, when they were needed by practitioners. As new...
Article
Full-text available
We present detailed surface measurements of the first 3.5 years of postseismic deformation following the 5 September 2012 moment magnitude (Mw) 7.6 Nicoya, Costa Rica earthquake. The dominant signal in the first 2.5 years is uniform horizontal trenchward motion totaling 7-26 cm across 40 stations. Trenchward velocity is strongly diminished by mid 2...
Article
We apply a waveform matching technique to obtain a detailed earthquake catalog around the rupture zone of the 5 September 2012 moment magnitude 7.6 Nicoya earthquake, with emphasis on its aftershock sequence. Starting from a preliminary catalog, we relocate ~7900 events using TomoDD to better quantify their spatiotemporal behavior. Relocated afters...
Conference Paper
Full-text available
We normally view the subduction interface as a constant structure throughout the seismic cycle, with the majority of stress-buildup, microseismicity, and slip occurring along it. However, using microseismicity recorded using a uniquely dense seismic network directly over the active subduction interface below Nicoya, Costa Rica, we find two differen...
Article
Measurements of seismic anisotropy in continental regions are frequently interpreted with respect to past tectonic processes, preserved in the lithosphere as "fossil" fabrics. Models of the present-day sublithospheric flow (often using absolute plate motion as a proxy) are also used to explain the observations. Discriminating between these differen...
Article
This article examines spatial changes to the local stress field resulting from the 28 October 2012, Mw 7.8 Haida Gwaii earthquake, off the west coast of Moresby Island, British Columbia. This event occurred on a northeast-dipping, potentially blindthrust fault rather than on the subvertical Queen Charlotte fault (QCF) that represents the Pacific–No...
Article
This study examines rupture properties of the October 28, 2012, Mw 7.7 Haida Gwaii earthquake o� the coast of British Columbia using an empirical Green's function (EGF) technique. Surface waveforms from a 2001 Mw 6.0 event, which ruptured only 15 km from the 2012 epicenter with an almost identical mechanism, are used as an EGF to be deconvolved fro...
Conference Paper
This study examines spatial changes to the local stress �eld resulting from the October 28, 2012, Mw 7.7 Haida Gwaii earthquake, which oc- curred west of Moresby Island o� the coast of British Columbia. This event is thought to have occurred on a NE-dipping, blind thrust fault rather than on the sub-vertical Queen Charlotte Fault that represents th...
Article
In 2007 and 2009, seven new broadband seismograph stations were installed in central and southern Québec, filling an important gap in network coverage across the region. The majority of the stations are situated within the Archean Superior craton, with a further two located in the Proterozoic Grenville Province. In this study, we examine receiver f...
Article
A B S t r A C t introduction: Through receiver function analysis, this study inquires into some of the most basic properties of the crust below southern and central Quebec. Methods: This is accomplished, using receiver function technique, by stacking waveforms from 277 teleseismic events magnitude 6.0 and larger to find the delay in arrival time fo...

About

31
Publications
2,112
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
100
Citations
Additional affiliations
June 2019 - present
Geological Survey of Canada
Position
  • PostDoc Position
August 2008 - October 2012
McGill University
Position
  • BSc Student
Education
August 2017 - May 2019
Georgia Institute of Technology
Field of study
  • Civil Engineering
August 2014 - May 2019
Georgia Institute of Technology
Field of study
  • Geophysics
September 2012 - August 2014
University of Victoria
Field of study
  • Geophysics

Network

Cited By