Cross-validation as a step toward the integration of local and scientific knowledge of geologic hazards in rural Peru

Malone, Aaron; Santi, Paul M.; Cabana, Yezelia Danira Cáceres; Smith, Nicole; Manning, Justin; Zeballos, Eliseo Zeballos; Zhou, Wendy

doi:10.1016/j.ijdrr.2021.102682

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…re ect random luck Malone, et al (2022). con rms local knowledge, awareness of hazards, and the residents' perceptions of hazard causes, such as randomness or luck, through interviews at the Alto Molino community.…”

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confidence: 88%

Quantitative analysis of changing hazard exposure due to community growth in the Arequipa Region of Peru

Eberle,

Santi,

Meza

2024

Preprint

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The Arequipa Region in Southern Peru is vulnerable to a unique set of geologic hazards which are a function of geology, climate, tectonic setting and the conditions of population settlement and local industries. The presence and expansion of mining in the region has the potential to directly affect geologic hazards by ground disruption and indirectly affect hazards by population increase and settlement in dangerous areas. We developed a set of geologic hazard maps for 12 communities in the region and quantified changes to hazard exposure based on community expansion patterns over time periods ranging from five to 17 years. Mapped hazards include debris flow, rockfall, flood, landslide, and earthquake liquefaction. Community expansion was measured from analysis of aerial imagery where developed areas are outlined at the beginning and end of the analyzed time interval. For the twelve communities evaluated, the percent of the developed area of each community exposed to hazards remained near constant, even with growth. Small changes were noted for specific hazards: rockfall was the most common hazard to have an increase in exposure, flood and liquefaction were the most likely to have decrease in exposure, while landslides (rotational or translational soil movements) and debris flows were the most likely to have no change. The percent of developed area exposed to high and medium levels of hazards in a community tended to decrease as development expanded over time, while area exposed to low levels of hazards increased. When analyzed by community characteristics, certain characteristics were associated with higher probability of larger changes in percent area exposed to hazards: river communities as opposed to coastal or mountain communities, small communities (< 0.5 km2 area), and communities located within 1.5 km of mining areas. Communities with extreme growth rates (more than 25% area increase per year) did not show different hazard exposure than communities with slower growth rates. The interaction between community growth and geologic hazards is an important area of future research.

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confidence: 88%

Quantitative analysis of changing hazard exposure due to community growth in the Arequipa Region of Peru

Eberle,

Santi,

Meza

2024

Preprint

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“…Arched beam bridges extending over rivers are susceptible to an array of geohazards, i.e., natural geological processes that carry the potential to compromise their integrity and safety. Among these, the looming risk of riverbank erosion emerges as a critical concern, gradually undermining the foundations on which these bridges stand [33,34].…”

Section: River-spanning Bridgesmentioning

confidence: 99%

Optimized Wavelet and Wavelet Packet Transform Techniques for Assessing Crack Behavior in Curved Segments of Arched Beam Bridges Spanning Rivers

Chen,

Lu,

Deng

et al. 2023

Water

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Our study focuses on the dynamic transient analysis of arched beam bridges over rivers, which face unique geohazards and challenges, including vibrations and dynamic loads that can affect structural integrity. The finite element software ANSYS v. 19.3 was employed to assess acceleration time histories at various bridge positions. Using MATLAB, we conducted wavelet packet decomposition to extract insights from the data, specifically isolating river-induced influences. In this article, the introduction of the wavelet packet rate index (WPERI) is presented as a novel metric for the detection of cracks in the curved bridge segments over rivers. The WPERI proves reliable in accounting for the river environment’s impact on structural integrity. Our findings highlight the sensitivity and precision of the WPERI in accurately detecting cracks and vulnerabilities in these riverine bridges. By combining WPT, finite element analysis, and signal decomposition, our research offers insights into tailored crack detection methods for riverine bridges. This study underscores the potential of WPT as a tool for identifying and characterizing cracks in curved bridge elements over rivers. The innovative WPERI provides a holistic approach to addressing structural issues, thus enhancing bridge durability amid changing environmental conditions. It contributes significantly to structural engineering and paves the way for the further exploration of river-specific crack detection techniques.

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Construction and application of a multilevel geohazard domain ontology: A case study of landslide geohazards

Wen,

Qiu,

Zheng

et al. 2023

Applied Computing and Geosciences

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Cross-validation as a step toward the integration of local and scientific knowledge of geologic hazards in rural Peru

Cited by 6 publications

References 15 publications

Quantitative analysis of changing hazard exposure due to community growth in the Arequipa Region of Peru

Quantitative analysis of changing hazard exposure due to community growth in the Arequipa Region of Peru

Optimized Wavelet and Wavelet Packet Transform Techniques for Assessing Crack Behavior in Curved Segments of Arched Beam Bridges Spanning Rivers

Construction and application of a multilevel geohazard domain ontology: A case study of landslide geohazards

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