Book contents
- Climate Risk and Sustainable Water Management
- Climate Risk and Sustainable Water Management
- Copyright page
- Contents
- Contributors
- Preface
- Acknowledgements
- Part I Water-Related Risks under Climate Change
- Part II Climate Risk to Human and Natural Systems
- 7 Observed Urban Effects on Temperature and Precipitation in Southeast China
- 8 Vegetation Dynamics, Land Use and Ecological Risk in Response to NDVI and Climate Change in Nepal
- 9 Climate Warming Induced Frozen Soil Changes and the Corresponding Environmental Effect on the Tibetan Plateau
- 10 A Review of the Effects of Climate Extremes on Agriculture Production
- 11 Agricultural Water Use Estimation and Impact Assessment on the Water System in China
- 12 Impact of Inter-Basin Water Transfer on Water Scarcity in Water-Receiving Area under Global Warming
- 13 Broadening and Deepening the Rainfall-Induced Landslide Detection
- 14 Estimating Aquifer Depth in Arid and Semi-arid Watersheds using Statistical Modelling of Spectral MODIS Products
- Part III Sustainable Water Management under Future Uncertainty
- Index
- References
13 - Broadening and Deepening the Rainfall-Induced Landslide Detection
Practices and Perspectives at a Global Scale
from Part II - Climate Risk to Human and Natural Systems
Published online by Cambridge University Press: 17 March 2022
- Climate Risk and Sustainable Water Management
- Climate Risk and Sustainable Water Management
- Copyright page
- Contents
- Contributors
- Preface
- Acknowledgements
- Part I Water-Related Risks under Climate Change
- Part II Climate Risk to Human and Natural Systems
- 7 Observed Urban Effects on Temperature and Precipitation in Southeast China
- 8 Vegetation Dynamics, Land Use and Ecological Risk in Response to NDVI and Climate Change in Nepal
- 9 Climate Warming Induced Frozen Soil Changes and the Corresponding Environmental Effect on the Tibetan Plateau
- 10 A Review of the Effects of Climate Extremes on Agriculture Production
- 11 Agricultural Water Use Estimation and Impact Assessment on the Water System in China
- 12 Impact of Inter-Basin Water Transfer on Water Scarcity in Water-Receiving Area under Global Warming
- 13 Broadening and Deepening the Rainfall-Induced Landslide Detection
- 14 Estimating Aquifer Depth in Arid and Semi-arid Watersheds using Statistical Modelling of Spectral MODIS Products
- Part III Sustainable Water Management under Future Uncertainty
- Index
- References
Summary
A better detection of landslide occurrence is critical for disaster prevention and mitigation. Over the past four decades, great achievements have been made, ranging from inventories to mapping, susceptibility analysis to triggering threshold identification. Here, we proposed a model to establish global distributed rainfall thresholds, by linking triggering rainfall with geo-environmental causes related to landslide events. The model was based on multiple linear regression method, to define rainfall thresholds as a function of diverse geo-environmental variables, fitted and validated by a combined and relatively accurate landslide dataset. Results show primarily feasible performances for training and testing datasets, with low mean absolute error (0.22 log(mm)) and a high coefficient of determination (0.67) totally. We further prepared global distributed threshold maps for sub- and multi-daily rainfall durations. They share similar spatial distributions in line with previous research. The normalized rainfall index, defined as the ratio of precipitation amount over distributed rainfall thresholds, can be an index of possible landslide occurrence, that is, regions with a normalized index over 1.0 correspond to high probability. We argue that distributed rainfall threshold models are an improvement of empirical threshold models and susceptibility assessments by considering the interaction between triggering rainfall and geo-environmental causes, and promising for better hazard assessment.
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- Climate Risk and Sustainable Water Management , pp. 267 - 288Publisher: Cambridge University PressPrint publication year: 2022