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Marc-André Brideau

@mabrideau.bsky.social
1.1K followers 150 following 55 posts

Engineering geologist specializing in landslide hazard. Based in Victoria British Columbia.

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Marc-André Brideau @mabrideau.bsky.social · 10/07/2026
I never cease to be amazed by the landscape complexities revealed by lidar. Robbie Burns Mountain (British Columbia, Canada). Lat50.444299, Long -118.830018. Data from lidar.gov.bc.ca/pages/downlo...
Optical imagery of Robbie Burns Mountain in British Columbia, CanadaHillshade view of Robbie Burns Mountain in British Columbia, Canada revealing complex slope deformation features.
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Marc-André Brideau @mabrideau.bsky.social · 24/06/2026
Nice! Field validation 😀
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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 12/06/2026
🚨Funding for 2yr postdoc w/ me & @geocron.bsky.social on landslide-tsunami-jökulhlaup project, but (this is the ridiculous part) I need to select someone NOW or I lose the $. If you're NOT in Canada (can be any nationality) and interested, send me your CV and transcripts by midnight MT, June 12. 🧪⚒️
icebergs in a glacial lake
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Marc-André Brideau @mabrideau.bsky.social · 01/06/2026
Colleagues at the BC Geological Survey just released a surficial geology compilation for the central part of the province. www2.gov.bc.ca/gov/content/...
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Eos @eos.org · 23/05/2026
Debris flows after fires can destroy infrastructure. The #USGS just improved its methods for assessing debris flow risk. eos.org/articles/a-n...
eos.org
A New Approach Can Better Predict Debris Flow Hazards Years After Fires - Eos
USGS hazard maps don’t always reflect real landslide risk in the years after wildfires. Fine-tuning assessments of vegetation recovery could help.
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Dave Petley @davepetley.bsky.social · 20/05/2026
In British Columbia, the remarkable CAN$115 million Cheekeye Debris Barrier Project is almost complete, designed to mitigate the risk posed by debris flows to the town of Squamish. eos.org/thelandslide...
eos.org
The Cheekeye Debris Barrier Project - Eos
Upstream of the town of Squamish in Canada the Cheekeye Debris Barrier Project is underway to mitigate the risk of debris flows.
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Marc-André Brideau @mabrideau.bsky.social · 12/05/2026
and it's on Thursday June 4, 2026
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Marc-André Brideau @mabrideau.bsky.social · 12/05/2026
Interested in post-wildfire geohazards? There is an in-person and online workshop as part of the Geohazards 9 conference. It is possible to just register for the workshop. www.geohazards9.ca/workshops
geohazards9.ca
Workshops | Geohazards 9
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Marc-André Brideau @mabrideau.bsky.social · 07/05/2026
Same! There are so many interesting things (I think they are) I could be reporting on the census
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Caroline Clason @carolineclason.bsky.social · 13/04/2026
📢 @geogdurham.bsky.social, a world-leading department for geographical research and education at @durham.ac.uk, is seeking to appoint an Assistant Professor in Physical Geography with expertise in Earth Observation... 🛰️ 1/3
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Marc-André Brideau @mabrideau.bsky.social · 26/04/2026
I wish I was in Aotearoa this week to attend in person but streaming it online will be the next best thing landsliderisk.nz
landsliderisk.nz
Landslide Risk and Geo-Education Conference 2026
Landslide Risk & Geo-Education (LaRGE 2026) International Landslide Risk and Geo-Education Conference in Queenstown, New Zealand.
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BC Wildfire Weekly - Wildfires + More @bcwildfirewkly.bsky.social · 26/04/2026
“Rock slide closes Yellowhead Highway west of Jasper” www.cbc.ca/player/play/... - CBC News The Yellowhead Highway, also known as #BCHwy16, is still closed west of Jasper, Alberta according to Drive BC: www.drivebc.ca?pan=-118.666... 511 Alberta: 511.alberta.ca#:Alerts #ABRoads #BCPoli #Jasper
cbc.ca
Rock slide closes Yellowhead Highway west of Jasper
One of the main routes through the mountains connecting Alberta and B.C. is currently impassable. RCMP confirm a rock slide early Saturday morning has forced the closure of Highway 16 in both directio...
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BC Wildfire Weekly - Wildfires + More @bcwildfirewkly.bsky.social · 23/04/2026
ICYMI: “The Peace River Regional District has issued a notice to an expanded group of homes, telling residents of Old Fort that they should be prepared to leave on short notice.” vancouver.citynews.ca/2026/04/23/n... - @citynewsvancouver.bsky.social #OldFort cc: #FortStJohn
vancouver.citynews.ca
New evacuation alert issued for Old Fort, B.C., residents after landslide
Officials have issued a new evacuation alert for residents in an area of northeastern B.C. where a landslide has cut off access.
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Marc-André Brideau @mabrideau.bsky.social · 21/04/2026
The 2018 activity at this site was featured in a Landslide Blog post by @davepetley.bsky.social blogs.agu.org/landslideblo...
blogs.agu.org
Old Fort landslide in British Columbia, an 8 millon cubic metre earthflow
The Old Fort landslide in British Columbia is an 8 millon cubic metre earthflow that has caused the evacuation of the village of Old Fort
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Marc-André Brideau @mabrideau.bsky.social · 21/04/2026
Reported new activity near the Old Fort Landslide in British Columbia www.cbc.ca/news/canada/...
cbc.ca
'Cracking' at site of historic landslide near Fort St. John triggers shelter-in-place, road closure | CBC News
The Ministry of Transportation says it closed Old Fort Road, south of Fort St. John, Sunday night after "cracking" appeared at the site of two historic landslides.
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Joseph Shea @josephshea.bsky.social · 19/04/2026
Nice view of Canmore today: Cougar Creek (centre of the photo), which drains out these snowy mountains, is one of the stops on our upcoming @unbcgeographyensc.bsky.social field school, where we will meet with a town engineer to talk about geohazards and mitigation.
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Dave Petley @davepetley.bsky.social · 16/04/2026
Since 1994 there has been a 32 times increase in the number of research outputs with the keyword "landslide". This represents a diversification of the discipline areas with an interest in landslides, and in the geography of the researchers themselves. eos.org/thelandslide...
The number of outputs using the keyword "landslide" in the period 1994 to 2025 inclusive, via Scopus.
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Marc-André Brideau @mabrideau.bsky.social · 15/04/2026
Well played YYJ, those cherry blossoms sure make the uphill part of the bike commute pretty.
Cherry blossom lining the street at sunrise
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Marc-André Brideau @mabrideau.bsky.social · 14/04/2026
So many different kinds to try!
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Marc-André Brideau @mabrideau.bsky.social · 13/04/2026
Our paper (me, @drewbrayshaw.bsky.social and Carie-Ann Hancock) providing highlights for British Columbia from the preliminary Canadian landslide database is now available at cmscontent.nrs.gov.bc.ca/geoscience/P... A bit thanks for all the 15 contributors for their ongoing support.
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Marc-André Brideau @mabrideau.bsky.social · 19/03/2026
Knock knock, no one’s there. Study finds scientists’ jokes mostly fall flat www.nature.com/articles/d41... Yup I have had jokes fall flat during conference presentations. Apparently I am not alone (maybe even in the majority)
nature.com
Knock knock, no one’s there. Study finds scientists’ jokes mostly fall flat
Survey examines how often academics attempt jokes during conference talks — and how these attempts at comedy land.
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BC Wildfire Weekly - Wildfires + More @bcwildfirewkly.bsky.social · 19/03/2026
COQUITLAM, BRITISH COLUMBIA: “Search and rescue crews used a helicopter and long lines to airlift eight people, two dogs and a cat to safety after a landslide in northern Coquitlam Thursday.” www.ctvnews.ca/vancouver/ar... - @ctvnewsvancouver.bsky.social #Coquitlam
ctvnews.ca
8 people, 3 pets rescued after landslide knocks out power lines in Coquitlam, B.C.
A landslide in rural northern Coquitlam knocked down power lines and caused an outage for more than 5,000 BC Hydro customers, as a series of storms continued to batter the Lower Mainland Thursday.
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Marc-André Brideau @mabrideau.bsky.social · 12/03/2026
www.piquenewsmagazine.com/local-news/w... Reports of rock slide overnight on Whistler Mountain
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Marc-André Brideau @mabrideau.bsky.social · 25/02/2026
I do have a copy of that one. Just emailed it to you
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Marc-André Brideau @mabrideau.bsky.social · 12/01/2026
Version 13 of the Preliminary Canadian Landslide Database is available. Highlights include 2,500 new entries and 449 slopes that were likely moving (2016-2024) based on interpretation of NRCan and NASA InSAR-based deformation maps. zenodo.org/records/1821...
Overview map of Canada with location points of 28,000 landslides symbolized according to 31 landslide types. Background image is a combination of ESRI satellite imagery and hillshade of the NRCan High Resolution Digital Elevation Model (HRDEM).Overview map of Canada with location points of 28,000 landslides symbolized according to interpreted InSAR-based deformation maps for slow slope movement. Interpretation is preliminary and ongoing. Background image is a combination of ESRI satellite imagery and hillshade of the NRCan High Resolution Digital Elevation Model (HRDEM).
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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 06/12/2025
Magnitude 6.8 earthquake ten minutes ago along Yukon/Alaska border on the Fairweather Fault. I am guessing this will result in some big landslides. 🧪⚒️ earthquake.usgs.gov/earthquakes/...
earthquake.usgs.gov
The Earthquake Event Page application supports most recent browsers, view supported browsers. Or, try our Real-time Notifications, Feeds, and Web Services.
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Marc-André Brideau @mabrideau.bsky.social · 23/11/2025
This week I get the chance to present at the Rock Slope and Gravity 2025 (RSG-2025) Conference: Forecasting and Modelling Large Rock Slope Failures in a Changing Mountain Environment. Lots of interesting talks: wp.unil.ch/rsg-2025/pro... It has an option to attend online.
wp.unil.ch
Program - Rock slope and gravity 2025
Program: Rock slope and gravity 2025 (RSG-2025): Forecasting and Modelling Large Rock Slope Failures in a Changing Mountain Environment The program generally follows the original session plan, though ...
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Marc-André Brideau @mabrideau.bsky.social · 23/10/2025
Here is the link to the dataset app.geo.ca/en-ca/map-br...
app.geo.ca
Pilot national scale maps of active deformation processes in Canada
The metadata page and map for the GeoCore record 1da588c1-0dc6-45e4-9e63-9acf2fdc353a
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Marc-André Brideau @mabrideau.bsky.social · 23/10/2025
Natural Resources Canada has released a national scale maps of active deformation processes based on 2017-2024 Sentinel-1 InSAR data. For best results download the images, load them up in your fav GIS software, and watch out many hours will be spent checking out features you always wondered about.
Overlay of InSAR displacement data on top of hillshade view of lidar. A strong displacement concentration corresponds with the geomorphic expression of a landslide.
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Marc-André Brideau @mabrideau.bsky.social · 23/10/2025
Only six days left to submit an abstract to Geohazards 9 which will take place in Edmonton, Alberta, Canada next June. www.geohazards9.ca
geohazards9.ca
Geohazards 9
Welcome to the 9th installment of the Canadian Conference on Geotechnique and Natural Hazards.  Since the inception for the series in 1992, applied earth science practitioners from across Canada have ...
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Dave Petley @davepetley.bsky.social · 08/10/2025
The 17 December 2024 Takhini River landslide and river-ice tsunami in Whitehorse, Yukon, Canada highlights the role of progressive failure in frozen materials. eos.org/thelandslide...
Surface elevation change detection comparing 2013 lidar DTM to a 2025 DSM created from UAV photos for the Takhini River landslide.
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Marc-André Brideau @mabrideau.bsky.social · 07/10/2025
Had a great day in the field yesterday. Between Woss and Zeballos on Vancouver Island.
Mountain at sunrise. The peak had an unusual shape with a column of rock sticking out.Fish eye lens view of mountains as seen from a forestry cut block.Distal mountain range in background and logging road in foreground.
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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 03/10/2025
🚨FOUR tenure track positions in my dept @ucalgary.bsky.social @ucalgaryscience.bsky.social in applied & computational geophysics, subsurface geochemistry, sedimentary geology, and sustainable soil science. careers.ucalgary.ca/search/jobs?... (please reskeet widely!) #academicsky 🧪⚒️🇨🇦
careers.ucalgary.ca
Opportunities matching 'earth'
Search 4 Careers available at University of Calgary.
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Marc-André Brideau @mabrideau.bsky.social · 29/09/2025
Over the last three years, @drewbrayshaw.bsky.social, @geocron.bsky.social, me, and twelve colleagues have been compiling a Preliminary Canadian Landslide Database. Version 12 is now available and contains 25,500 entries. zenodo.org/records/1721...
Overview map of Canada with location points of 25,550 landslides symbolized according to 30 landslide types. Background image is a combination of ESRI satellite imagery and hillshade of the NRCan High Resolution Digital Elevation Model (HRDEM)Overview map of Canada with location points of 25,550 landslides symbolized according to what version of the database they were last modified. It shows that more than half they entries were added or modified in the latest version. Background image is a combination of ESRI satellite imagery and hillshade of the NRCan High Resolution Digital Elevation Model (HRDEM)
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Brendan O’Neill @permafrostee.bsky.social · 24/09/2025
IT’S ALIVE! The Glossary of Permafrost Science and Engineering is released and available to all for free! Spread the news! You can download it here: canadianpermafrostassociation.ca/glossary-of-...
Dr Toni Lewkowicz launching the glossary!
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Marc-André Brideau @mabrideau.bsky.social · 23/07/2025
You can now submit your abstract for the Geohazards 9 conference next June in Edmonton Alberta www.geohazards9.ca/call-for-abs...
geohazards9.ca
Submit | Geohazards 9
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Marc-André Brideau @mabrideau.bsky.social · 20/07/2025
Interesting landslide landscape visible in the newly available 2024 lidar along the Fraser River. Lidar from lidar.gov.bc.ca/pages/downlo... Landslide outlines from www.frdr-dfdr.ca/repo/dataset... Landslide points from zenodo.org/records/1529...
Hillshade view of 2024 lidar along Fraser River showing 1.5km+ wide low angle landslide
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Marc-André Brideau @mabrideau.bsky.social · 17/07/2025
the new Landslide Mapping Guidelines from Engineers and Geoscientists British Columbia are now available. A useful document for geohazard practitioners in British Columbia (and beyond). tools.egbc.ca/Registrants/...
tools.egbc.ca
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Marc-André Brideau @mabrideau.bsky.social · 27/06/2025
Not sure, the pre-failure imagery from esri shows small scale instabilities and talus along the runout path. Could be runup, or entrainment, or secondary failures.
True colour pre-failure imagery from esri
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Marc-André Brideau @mabrideau.bsky.social · 27/06/2025
The July 26, 2022 imagery has a nice view of the source area
July 26, 2022 false colour imagery that has good view of both the source and deposit areas.
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Marc-André Brideau @mabrideau.bsky.social · 27/06/2025
Sentinel imagery suggest it happened between June 26, 2022 and June 29, 2022
June 26, 2022 false colour Sentinel imagery with no landslide depositJune 29, 2022 false colour Sentinel imagery with landslide deposit
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Dave Petley @davepetley.bsky.social · 18/06/2025
Derek Cronmiller of the Yukon Geological Survey has provided a stunning set of the images of the fascinating recent failure that partially blocked the Yukon River. This is a textbook example of a complex rotational landslide:- eos.org/thelandslide...
The May 2025 Yukon River landslide, viewed from a drone. Image copyright the Yukon Geological Survey, used with permission.The uplifted toe of the May 2025 Yukon River landslide. Image copyright the Yukon Geological Survey, used with permission.Back-tilted blocks in the May 2025 Yukon River landslide. Image copyright the Yukon Geological Survey, used with permission.
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Marc-André Brideau @mabrideau.bsky.social · 23/05/2025
Yes there appears to be a few additional potential landslide features not currently in the SIGÉOM inventory. That landslide layer is part of the provincial surficial geology compilation. Not sure what year it was done and if lidar was available at the time.
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Marc-André Brideau @mabrideau.bsky.social · 23/05/2025
A landslide in quick (sensitive) clay in central Québec this week as been featured in the news. www.cbc.ca/news/canada/... Lidar and previous landslide inventory support the statement in the news report that landslides have occurred in the area before.
Close-up of the outlines and point locations of previous landslides relative to the May 21, 2025 landslide. background image from NRCan lidar.Overview of the outlines and point locations of previous landslides relative to the May 21, 2025 landslide. background image from NRCan lidar.2024 satellite imagery from Google Earth of the area where the May 21, 2025 landslide occurrred.
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Marc-André Brideau @mabrideau.bsky.social · 29/04/2025
Nice ones!!!
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Marc-André Brideau @mabrideau.bsky.social · 08/03/2025
WHOA!!!
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Marc-André Brideau @mabrideau.bsky.social · 13/02/2025
There is 2021 lidar available from (lidar.gov.bc.ca/pages/downlo...) for that feature. It suggest that the local relief is only ~260m.
Hillshade view of the 2021 lidarTopographic profile along longitudinal section
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Jamie Shulmeister @jamie-shulmeister.bsky.social · 09/02/2025
I am pleased to report that we are now accepting abstracts for the 11th International Conference on #Geomorphology in Christchurch New Zealand in February 2026. #geoscience #hazards #rivers #tectonics #glaciers #coasts #landslides Please repost. www.confer.co.nz/icg2026/call...
confer.co.nz
Call For Abstracts - 2026 IAG International Conference on Geomorphology
Call for Abstracts Abstract Submissions Now Open! Click the button to the right to begin your abstract submission. SUBMIT YOUR ABSTRACT HERE Abstract
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Marc-André Brideau @mabrideau.bsky.social · 30/01/2025
Very interesting new paper by former colleagues Carie-Ann Hancock and Kyle Wlodarczyk on the role of wildfires and forest harvesting on geohazards and channel stability during the November 2021 atmospheric river in SW British Columbia, Canada. onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
The role of wildfires and forest harvesting on geohazards and channel instability during the November 2021 atmospheric river in southwestern British Columbia, Canada
During the November 2021 atmospheric river in British Columbia, Canada, hundreds of landslides were triggered. We found that geohazards occurred more frequently in wildfire burned areas and along for...
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Marc-André Brideau @mabrideau.bsky.social · 22/01/2025
The next Canadian Geohazards Conference will be June 1-3, 2026 in Edmonton Alberta. You can register for updates at geohazards9.ca
geohazards9.ca
GeoHazards 9
June 1-3, 2026 Edmonton, Alberta
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