Post-fire debris flow modeling analyses: case study of the post-Thomas Fire event in California

2019 ◽  
Vol 100 (1) ◽  
pp. 329-343 ◽  
Author(s):  
Priscilla Addison ◽  
Thomas Oommen
Keyword(s):  
Debris Flow ◽  
Flow Modeling ◽  
Fire Event ◽  
Fire Debris

EMERGENCY ASSESSMENT OF POST FIRE DEBRIS FLOW AND FLOODING HAZARDS, 2015 VALLEY AND BUTTE FIRES, CALIFORNIA

2016 ◽  
Author(s):  
Patrick K. Brand ◽  
◽  
David L. Longstreth ◽  
Jeremy T. Lancaster ◽  
William R. Short
Keyword(s):  
Debris Flow ◽  
Flooding Hazards ◽  
Fire Debris

DISTINGUISHING POST-FIRE DEBRIS FLOW EROSIONAL AND DEPOSITIONAL ZONES IN A BURNED WATERSHED

2019 ◽  
Author(s):  
Francis K. Rengers ◽  
◽  
Jason W. Kean ◽  
Dennis M. Staley ◽  
Luke McGuire
Keyword(s):  
Debris Flow ◽  
Fire Debris

Susceptibility Assessments and Validations of Debris-Flow Events in Meizoseismal Areas: Case Study in China’s Longxi River Watershed

2020 ◽  
Vol 21 (1) ◽  
pp. 05019005 ◽  
Author(s):  
Saier Wu ◽  
Jian Chen ◽  
Chong Xu ◽  
Wendy Zhou ◽  
Leihua Yao ◽  
...  
Keyword(s):  
Debris Flow ◽  
River Watershed

Observations and Analyses of the 9 January 2018 Debris-Flow Disaster, Santa Barbara County, California

2021 ◽  
Vol 27 (1) ◽  
pp. 3-27
Author(s):  
Jeremy T. Lancaster ◽  
Brian J. Swanson ◽  
Stefani G. Lukashov ◽  
Nina S. Oakley ◽  
Jacob B. Lee ◽  
...  
Keyword(s):  
Debris Flow ◽  
Debris Flows ◽  
Extreme Rainfall ◽  
Atmospheric Conditions ◽  
Santa Barbara ◽  
Debris Removal ◽  
Fire Debris ◽  
Santa Barbara County ◽  
Coastal Land

ABSTRACT The post–Thomas Fire debris flows of 9 January 2018 killed 23 people, damaged 558 structures, and caused severe damage to infrastructure in Montecito and Carpinteria, CA. U.S. Highway 101 was closed for 13 days, significantly impacting transportation and commerce in the region. A narrow cold frontal rain band generated extreme rainfall rates within the western burn area, triggering runoff-driven debris flows that inundated 5.6 km2 of coastal land in eastern Santa Barbara County. Collectively, this series of debris flows is comparable in magnitude to the largest documented post-fire debris flows in the state and cost over a billion dollars in debris removal and damages to homes and infrastructure. This study summarizes observations and analyses on the extent and magnitude of inundation areas, debris-flow velocity and volume, and sources of debris-flow material on the south flank of the Santa Ynez Mountains. Additionally, we describe the atmospheric conditions that generated intense rainfall and use precipitation data to compare debris-flow source areas with spatially associated peak 15 minute rainfall amounts. We then couple the physical characterization of the event with a compilation of debris-flow damages to summarize economic impacts.

scholarly journals Risk management on an alluvial fan: a case study of the 2008 debris-flow event at Villar Pellice (Piedmont, N-W Italy)

2010 ◽  
Vol 10 (5) ◽  
pp. 999-1008 ◽  
Author(s):  
M. Arattano ◽  
R. Conte ◽  
L. Franzi ◽  
D. Giordan ◽  
A. Lazzari ◽  
...  
Keyword(s):  
Debris Flow ◽  
Human Life ◽  
Alluvial Fan ◽  
Civil Protection ◽  
Emergency Situations ◽  
New Guidelines ◽  
Personal Accounts ◽  
Regional Authorities ◽  
North Western

Abstract. In the Piedmont Region (North-Western Italy), the regional authorities manage debris flow risk by following the ideal sequence of steps that are generally pursued in land planning and civil protection activities. Complex procedures and methods are elaborated and widely discussed with politicians, economists and the general public. On the contrary, in emergency situations, civil protection agencies generally prefer the adoption of simple and flexible criteria. In this paper, a catastrophic debris flow event, that occurred in 2008 in Villar Pellice, is described in this perspective, after an analysis of the triggering rainfalls and of the effects on human life and properties. The availability of a series of personal accounts coming from people who witnessed the occurrences before, during and after the event has allowed us to analyse, in detail, the dynamics of the event. Thanks to these accounts, it has been possible to propose new guidelines for the planning of the emergency activities in areas that are potentially prone to similar impulsive phenomena.

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