The August 14, 2021, magnitude 7.2 Nippes, Haiti, earthquake triggered thousands of landslides on the Tiburon Peninsula. The landslides directly caused fatalities and damage and impeded response efforts by blocking roads and causing other infrastructure damage. Adverse effects of the landslides likely will continue for months to years. This report presents an assessment of potential postearthquake landslide-related geologic hazards for the Tiburon Peninsula and a preliminary map of the landslides triggered by the earthquake. This hazard assessment is based on an emergency analysis of the currently available, postearthquake satellite imagery. In this report, we highlight specific areas of concern that may benefit from more detailed assessment and longer-term monitoring. Our mapping efforts revealed that at least 4,893 landslides were triggered across the Tiburon Peninsula by the earthquake and subsequent rainfall from Tropical Cyclone Grace. We also observed hundreds of landslide deposits potentially restricting flow in rivers and streams. In addition, we observed landslides that likely affected roads by rendering them impassable or susceptible to subsequent damage from existing landslides. Because of the preliminary nature of this report and the limits of remote analyses, additional investigation and monitoring would be beneficial to accurately determine the threat posed by these hazards to people and infrastructure.
Citation Information
Publication Year | 2021 |
---|---|
Title | Landslides triggered by the August 14, 2021, magnitude 7.2 Nippes, Haiti, earthquake |
DOI | 10.3133/ofr20211112 |
Authors | Sabrina N. Martinez, Kate E. Allstadt, Stephen L. Slaughter, Robert G. Schmitt, Elaine Collins, Lauren N. Schaefer, Sonia Ellison |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 2021-1112 |
Index ID | ofr20211112 |
Record Source | USGS Publications Warehouse |
USGS Organization | Geologic Hazards Science Center |
Related Content
Rapid Response Landslide Inventory for the 14 August 2021 M7.2 Nippes, Haiti, Earthquake
Kate E Allstadt, Ph.D.
Research Geophysicist
Research Geophysicist
Stephen L. Slaughter
Associate Program Coordinator
Related Content
- Data
Rapid Response Landslide Inventory for the 14 August 2021 M7.2 Nippes, Haiti, Earthquake
We present a preliminary point inventory of the landslides associated with the M7.2 Nippes, Haiti, earthquake that occurred on August 14, 2021. The mapping was part of rapid response efforts to identify hazards for situational awareness and emergency response by humanitarian aid organizations. This inventory accompanies an Open-File Report detailing the hazards presented by the landslides triggere - Connect
Kate E Allstadt, Ph.D.
Research GeophysicistResearch GeophysicistEmailPhoneStephen L. Slaughter
Associate Program CoordinatorEmailPhone