Landslides

Landslide figure 1
Fig. 1: Aerial photo of the 2021 Canoe Glacier landslide deposit (Bradford White photography).

Landslides in high lattitude alpine environments are projected to increase in magnitude and frequency in response to deglaciation, permafrost thaw, and extreme weather events. Satellite and seismic studies, as well as first person reports, have documented a high number of >10 million cubic meters landslide events in the past two decades in the Pacific Northwest that underscores this increasing risk to Alaskan and British Columbian communities. Despite the increasing number of observed landslide events, in-situ and temporally continuous monitoring of unstable mountain slopes and their response to the rapidly changing alpine environment remains elusive. Consequently, we lack a basic understanding of processes that prime or trigger catastrophic failure of unstable mountain slopes. Using tools learned in the mining industry, I'm expanding my research to study unstable mountain slopes in Alaska and British Columbia with the goal of helping local communities prepare themselves for this rapidly evolving geohazard risk.

Debris Flows Mass Wasting Runout Rheology Hazard Assessment

Methods & data

I use field mapping, drone photogrammetry, satellite InSAR, GNSS, and weather data to study the structure and displacement of unstable mountain slopes.

Landslide figure 1
Fig. 1: Satellite image of two creeping landslides on opposite sides of a retreating glacier in NW British Columbia.
Landslide figure 2
Fig. 2: Sentinel-1 InSAR displacement product from the NASA OPERA platform showing a downslope acceleration of a creeping landslide in NW British Columbia following a month long precipitation event that occurred in 2020.
Landslide figure 3
Fig. 3: ERA5 reanalysis data for NW British Columbia region showing surface temperature and 4-week antecedent rain for the 2020-2021 period. Yellow and red dashed horizontal lines show thresholds for moderate and high landslide risk thresholds.