cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds2-nfdp-xe86
title: Undergraduate Research Experience (REU), NHERI 2019: Seismic Tests of Self-Centering CLT Shear Wall with Floor Diaphragm and Gravity Load System

description: Participated in a research team experimentally investigating the behavior of Self-Centering Cross-Laminated Timber walls at Lehigh University's Advanced Technology for Large Structural Systems lab. Investigation included limit states of the walls under both in-plane and bidirectional seismic lateral loading, as well as interaction with other structural components such as the floor diaphragm, gravity load system, and collector beam. Pre-test checks, testing procedures and preliminary test results are presented in this paper.
DOI: 10.17603/ds2-5spt-gv81
title: Large Centrifuge Experiments of Hydrodynamic Loading in Water Tanks
title: in Centrifuge Modeling of Hydrodynamic Loading in Water Tanks

description: A series of 5 experiment setups investigating the hydrodynamic loading of water in a rigid container.
description: Many U.S. west coast cities have constructed buried water tanks for potable water supply. Earthquake activity can damage these structures, which can lead to rupture and flooding and can impede fire suppression efforts and delay economic activities. Current design methods rely on simplified assumptions that do not address all the mechanisms involved in this soil-structurewater- interaction problem. One of the main limitations is accounting for hydrodynamic loads induced by the inertial movement of water.
A series of five centrifuge model tests was conducted with the goal of understanding and reducing the uncertainty associated with hydrodynamic loads. The centrifuge tests studied the structure-water-interaction problem by varying the properties that have been found to affect the problem most: height of the roof and water and the length of the tank. The response of the system was captured by inducing first, second, and third modes of sloshing as well as shaking the system with broadband earthquake motions. Changes in load and water height were recorded with pressure transducers, tactile pressure sensors, and high-speed cameras. The results from the centrifuge tests will be used to (1) compare to theoretical and numerical simulations for the free oscillation of liquids (2) examine the relationship between peak hydrodynamic pressure and input motion acceleration and intensities (3) investigate the distribution of pressures along the different dimensions of the tank, and (4) elucidate accuracy of current design methods.
DOI: 10.17603/ds2-7cjc-5n58
title: Mitigation of Seismic Risk to Critical Building Contents via Rolling Pendulum Isolation Systems: Multi-Directional Hybrid Shake Table Tests

description: Participated in a research project that involved multi-directional shake table preparation for future characterization testing of the rolling pendulum floor isolation system to understand its performance. This involved performing kinematics validation of the shake table to develop the actuator control system that will be used in future tests. The results of the future characterization tests will be used in the first multi-directional real-time hybrid simulation test for the rolling pendulum floor isolation system in the Lehigh University ATLSS Engineering Research Center. The efforts done contribute to the earthquake engineering community.
DOI: 10.17603/ds2-j0j1-5827
title: Transient Wave Transformation though Reduced-Scale Physical Model of Mangrove Forests of Moderate Cross-Shore Width
title: in Experimental Investigation of Wave, Surge, and Tsunami Transformation Over Natural Shorelines: Reduced Scale Physical Model

description: This project investigated the potential of mangroves as a natural and nature-based option for coastal flood hazard mitigation through construction of a 1:16- geometric scale physical model, based on post-storm damage assessments following Hurricane Irma (2017) indicated that mangroves of modest cross-shore thickness (O~20m) shielded inland structures and mitigated damage compared to other shoreline treatments. Transient and random waves were generated across an idealized mangrove test section of two cross-shore widths as well as a baseline case to measure mangrove effects on hydrodynamics and loads on sheltered inland structures. This project was part of the experimental campaign, "Collaborative Research: Wave, Surge, and Tsunami Overland Hazard, Loading and Structural Response for Developed Shorelines," with collaborators from the United States Naval Academy, University of Notre Dame, Oregon State University, University of Southern California, University of Hawaii at Manoa, and Hanyang University.
description: Experiments measured hydrodynamics (water surface elevation, velocities) in front of and behind a model mangrove forest of two moderate cross-shore widths. Pressures and loads on sheltered inland structures were also measured to investigate load reduction by mangroves. Tests were performed in the Directional Wave Basin at O.H. Hinsdale Wave Research Laboratory at Oregon State University. Experimental outcomes indicated that the presence of mangroves significantly affected water levels and peak cross-shore velocities behind the forest, and increasing mangrove cross-shore thickness reduced wave loads on the sheltered inland structural elements. The relationship between increasing cross-shore thickness and load reduction was not linear; the relative benefit of increased cross-shore thickness was affected by the amplitudes and representative time scales of the transient waves. Data can be reused to validate computational models and for comparison with other physical model investigations of mangrove effects on wave transformation and load reduction.
DOI: 10.17603/ds2-yyqr-zv49
title: Establishing a Social Research Infrastructure for Hazards and Disaster Studies – Ontario Canada

description: Establishing a Social Research Infrastructure for Hazards and Disaster Studies in Canada,” funded by the Canada Research Chairs Program (Award # CRC-2020-00128). 


This project aims to comprehensively asset map the existing hazards and disaster scholars, educational courses, modules, and programs at the post-secondary education organizations in Ontario, Canada. Accordingly, data were collected from (1) the official institution websites of 21 universities, 24 colleges, nine indigenous institutes, 17 Minister’s consent authorizes private institutions (https://www.ontario.ca/page/ontario-universities), and (2) the Ontario Private Career College search service for 495 private career colleges (https://www.pcc.tcu.gov.on.ca/PARISSearchWeb/search.xhtml). 

These data include the information of (1) courses that focus on climate change, hazards, risks, and disasters, and (2) academic programs that are related to the topic of climate change, disasters, and other crises. The original data also indicate faculty members who have expertise in conducting hazard and disaster research. However, faculty members’ data (e.g., names, email addresses, and office telephone numbers) cannot be shared publicly due to privacy and ethical concerns. The users may use the courses and programs information included in this dataset to identify related faculty members.

These data illustrate the strengths and weaknesses of hazards-and-disaster-specific post-secondary education resources in Ontario, which might encourage hazards and disaster educators to understand the existing gaps and explore possible solutions. Researchers in Canada and internationally could use these data to navigate their potential research collaborators through related educational programs. Future students could use these data to search for hazards-and-disaster-related programs and courses, as well as contact potential faculty members in related departments. The general public could use the data to further search detailed information associated with the courses and programs they might be interested in as well as identify their community-based scholars through the courses and programs.
DOI: 10.17603/ds2-2acf-2y97
title: Delft3D model runs
title: in Data, model setup and simulation output from "Estuarine response to storm surge and sea level rise associated with channel deepening: A flood vulnerability assessment of southwest Louisiana, USA"

description: This dataset contains input data, model setup, and simulation output for "Estuarine response to storm surge and sea level rise associated with channel deepening: A flood vulnerability assessment of southwest Louisiana, USA". It allows the user to re-run the models and continue further study of channel deepening impacts. Details about the dataset are provided in the ReadMe file .
description: We tested the hypothesis that the deepening of the Calcasieu Ship Channel has increased the flood vulnerability of the Calcasieu Lake estuarine region. We accomplished this by numerical experiments using Delft3D modeling suite based on 1874, 1903, 1941 and 2020 channel bathymetric conditions and the measured meteorological forcing data of Hurricane Laura (2020). We also incorporated SLR effects in our numerical study.
DOI: 10.17603/ds2-5q4s-nx82
title: Terrestrial Laser Scans of Rockslopes
title: in Terrestrial laser scans of the Port Hills Rockfall from the Canterbury New Zealand Earthquake Sequence

description: Several rockfalls occurred during and following the Canterbury New Zealand Earthquake Sequence. GNS Science collected repeat terrestrial lidar scans of large rockslopes to quantify rockfall volumes and track changes throughout the sequence.
description: Repeat terrestrial laser scans of data collected at rockslopes in Christchurch New Zealand for the RedCliffs, Peacock's Gallup, and Wakefield Sites throughout the Canterbury New Zealand Earthquake Sequence.
DOI: 10.17603/ds2-artw-8967
title: XML Creation
title: in A Herero-Functional Graph Analysis of Electric Power Systems Test Case XML

description: This data was used to create a hetero-functional graph theory compliant XML for structural resilience studies.
description: This project can be used to recreate the test case, Hetero-functional graph theory (HFGT) compliant, XML input file that was used in the Innovative Smart Grid Technologies (ISGT) 2020 conference paper “A Hetero-functional Graph Analysis of Electric Power System Structural Resilience”. The test case was based off the IEEE 123-Bus Feeder test case and adapted into a radial distribution network.  The Radial distribution network was processed and converted into a HFGT compliant XML for creating a hetero-functional graph.
DOI: 10.17603/ds2-qghm-9z64
title: SimCenter Workshop: Simulation and Data needs to support Disaster Recovery Planning

description: This project contains data collected during the breakout sessions of the Workshop on Simulation and Data needs to support Disaster Recovery Planning organized by the NHERI SimCenter at UC Berkeley on January 30-31, 2020. The data provides a snapshot of critical questions and datasets collected by participants from the broad Natural Hazards Engineering community. The data also includes information on datasets consumed and produced by members of the NHE community, including the trustworthiness and accessibility of the data. We also share an ontology developed to help us classify and process the raw data from the workshop. We expect that the ontology can aid others in their NHE data classification tasks.
DOI: 10.17603/ds2-ff3m-rn02
title: Exploring Structural Dynamics Principles Using 3D Printing Methods
title: in 3D-Printing Dynamics Design (3D3) Competition – Fall 2022

description: The 3D-printing Dynamics Design (3D3) Competition intends to train School of Civil Engineering & Environmental Science (CEES) undergraduates at the University of Oklahoma in fundamental concepts related to vibrations, structural dynamics, and earthquake engineering through a semester-long, hands-on competition run in parallel with Introduction to Dynamics for Architectural and Civil Engineers (CEES 3263). Competition participants, or 3D3 Scholars, design, build, and test a bench-scale shake table using 3D-printed components. The designs of these shake tables are published here, along with all the STL files needed for teachers or students elsewhere to fabricate the tables. Also, the data collected during the challenges is published.
description: Structural integrity of built environment is key to ensure long lasting infrastructure that serve their respective purpose. This report serves to explore elements that factor in structural dynamics. The elements range from angular motion, reciprocating motion, and structural dynamics concepts of resonance and damping. This investigation uses 3D printing of models to gain a concrete understanding of these concepts through a series of three challenges. Challenge 1 focuses on design and testing of a wheel to obtain minimum angular acceleration. Challenge 2 focuses on the design and testing of reciprocating motion devices that would later be used for Challenge 3. Challenge 3 investigates how mass and stiffness of structural columns affect the natural frequency of a structure. This challenge incorporates angular motion and reciprocating motion concepts to subject a designed structure to forced and free vibration. Challenge 1 results show that mass concentrated further from the axis of rotation reduce the angular acceleration of an object in angular motion. Challenge 2 reveals that translating reciprocating motion to linear motion can be mathematically modelled and the responses largely depend on the reciprocating motion device. Challenge 3 reveals that real life structures exhibit lightly damped conditions and reach a point of failure at high displacements at resonance.
DOI: 10.17603/ds2-k7bd-kn82
title: Wireless Sensor Network System Deployment During Hurricane Nicole, Satellite Beach, FL, November 2022
title: in Hurricane NICOLE Data from Wireless Pressure Sensor Network and LiDAR

description: The Florida Tech Wireless Sensor Network System (FIT WSNS) and Florida Tech LiDAR measured and recorded pressure, temperature and wind data during the passage of Hurricane Nicole from 2022/11/08 to 2022/11/11. The FIT WSNS consists of pressure and temperature sensors, and a R.M. Young anemometer; deployed on a residential house roof in Satellite Beach, Florida (GPS LOC: 28°10'33.5"N 80°35'41.8"W). 

The Florida Tech LiDAR, a conically scanning ZephIR Z300 LIDAR was placed in a secured yard approximately 50 m (~ 150 ft) across the street and configured to measure at 11 different range gates (11 m - 300 m AGL). Additional meteorological data (ambient air temperature, relative humidity, and barometric pressure) were collected from an independent Airmar meteorological station on top of the LiDAR at 1 m AGL. 

An additional meteorological mast was deployed int the front yard of the residence with an independent R.M. Young anemometer (3.3 m AGL), a temperature and relative humidity sensor (2 m AGL), barometric pressure sensor, and tipping bucket rain gauge connected to a Hobo data logger. The instruments on the meteorological mast sampled at 1 Hz and were logged as a 1 minute average. A maximum 3 s gust and direction is also logged.

The different anemometry used in the WSNS and LiDAR deployments during Nicole are useful to study wind changes across the residence. FIT WSNS deployment consisted of 22 pressure sensors and 6 pressure taps with sampling rate (SR) = 10Hz, 1 reference pressure with SR = 10Hz and 2 anemometers with SR = 1Hz. The goal of the Nicole Deployment is to 1) Measure actual near-surface wind profiles for different wind speeds and directions; 2) Analyze wind pressures on the residential house roof and wind data from different anemometry, with Jupyter notebooks; 3) Use field data to validate and improve current wind loads recommendations and models for pressure distributions on building components, wind profiles and terrain roughness characterization.
description: The Florida Tech Wireless Sensor Network System (FIT WSNS) measured and recorded pressure, temperature and wind data during the passage of Hurricane Nicole from 2022/11/08 to 2022/11/11. The FIT WSNS deployment consisted of 22 pressure sensors with sampling rate (SR) = 10Hz, 1 reference pressure with SR = 10Hz and 1 functional R.M. Young anemometers with SR = 1Hz. They were deployed on a residential house in Satellite Beach, Florida (GPS LOC: 28°10'33.5"N 80°35'41.8"W). The goal of this deployment was to measure surface pressure loads on the building components and compare to reference and ASCE 7 specification values.
DOI: 10.17603/ds2-mprs-4g31
title: Earthquake simulator experiments of components submerged in a fluid-filled vessel
title: in Dynamic responses of submerged components in advanced reactors

description: A set of earthquake simulator tests were conducted on submerged components in a fluid-filled base-supported vessel. The submerged components, which were simplified representations of internals in a reactor vessel, were suspended from the head of the fluid-filled vessel for earthquake-simulator tests. Multiple configurations were tested. Multi-component earthquake inputs, which spanned a wide range of amplitudes and frequencies, were used for testing. Data on responses of submerged component, including in-water frequencies and acceleration and strain histories, were generated. The data will help engineers performing numerical analyses of submerged components to validate their numerical tools for seismic fluid-structure interaction analysis.
description: A set of experiments was executed on a 6-degree-of-freedom earthquake simulator to generate data that could support validation of numerical models for seismic fluid-structure interaction (FSI) of submerged components. A scaled model of a base-supported reactor vessel with simplified representations of submerged internals was tested to generate response histories for submerged components and a range of seismic inputs. This study, addressing dynamic FSI responses of submerged components for multi-component earthquake shaking, is the first of its kind. The generated data, which included pressure responses on internals, in-water frequencies of internals, and acceleration and strain responses of internals, could be used by analysts in the civil, nuclear, or mechanical engineering domains to validate numerical models of submerged components in commercial finite element codes.
DOI: 10.17603/ds2-p659-3295
title: Research Experiences for Undergraduates (REU), NHERI 2022: Deep Learning-based Friction Modeling of Dry Interfaces for Structural Dampers

description: This project develops a physics-informed friction model to describe a rotary friction damper. A LuGre friction model is augmented using online parameter updating to capture semi-active and backlash effects. The methodology given here can be applied in general to friction systems. This project is unique in applying physics-informed machine learning to friction modeling and in producing time-varying parameter predictions. The audience is the natural hazards engineering community and those interested in friction modeling.
DOI: 10.17603/ds2-s7wv-pn32
title: Hurricane Risk Perceptions of U.S. Gulf Coast Residents in 2017

description: Although hurricane risk perceptions and risk communication have been widely studied, comparably little attention has been given to how coastal residents interpret messages about trends in hurricane risk. Along the U.S. Gulf Coast, paleo records show that intense, landfalling hurricanes have been much more frequent in the geologically recent past, and climate models and experts project that global climate change will likely bring a return to more frequent intense hurricane activity over the next century. To enable planning and preparedness, there is therefore an urgent need to effectively communicate these trends to Gulf Coast stakeholders. To meet this need, an online survey of Gulf Coast residents was conducted in December 2017. This survey considered how randomly assigned infographics showing past or future trends in intense hurricane frequency affect hurricane risk perceptions and frequency beliefs among Gulf Coast residents. The survey questions, codebook, IRB approval, and csv-formated dataset and R code used to analyze the effects of infographic format on risk perceptions and frequency beliefs are presented in this repository. The survey questions, data, and code for this project may be reused but attribution is required (see terms of Open Data Commons Attribution license).
DOI: 10.17603/ds2-t4qr-g268
title: Rigid wall, constant head, saturated hydraulic conductivity
title: in Characterization and Geotechnical Properties of Wildfire Ashes

description: The saturated hydraulic conductivity testing of wildfire ash mixtures was performed in a rigid wall permeameter (D = 11.4 cm) under constant head (ASTM D2434 2000). Samples were prepared by placing a thick layer of wildfire ash (4 – 6cm) above a layer of compacted Silver #20 sand (10 cm). This was done to both conserve the quantity of ash for other testing and to simulate a field scenario where ashes are deposited above native soils following a wildfire event. The compacted sand had a unit weight of 15.8 kN/m3, and the wildfire ash layers were prepared in both a loose state (target 50% relative compaction) and a dense state (target 85% relative compaction). Prepared specimens were saturated for a 24-hour period and then tested for saturated hydraulic conductivity at hydraulic gradients of 3 – 4 (depending on the final height of the specimen after saturating). The equivalent hydraulic conductivity method was used to estimate the saturated hydraulic conductivity of the ash layer, assuming that vertical flow dominated (Budhu 2011).
description: This project summarizes the geotechnical engineering properties of eight samples of wildfire ash sampled from three different wildfire sites in central and southern California. This data can be used in conjunction with data collected from others to provide a database of the physical, chemical, hydrological, and engineering properties of wildfire ashes. Extensive engineering testing of wildfire ashes is not readily available in literature, so this work will supplement the supply currently available. This work would be information and educational for those researching wildfire ashes, fire-exposed slopes, carbonate-rich soils, and manmade soils, including other types of ash. This data can be reused by those who would like reference data for further testing on wildfire ashes and for those who require reference data on soil engineering properties.
DOI: 10.17603/ds2-tygh-ht91
title: CPT-Based Liquefaction Case Histories Resulting from the 2010-2016 Canterbury,  New Zealand, Earthquakes: A Curated Digital Dataset (Version 2)

description: Earthquakes occurring over the last decade in the Canterbury region of New Zealand have resulted in liquefaction case-history data of unprecedented quantity. This provides the profession with a unique opportunity to advance the prediction of liquefaction occurrence and consequence. Towards that end, this study presents a curated dataset of approximately 15,000 CPT-based liquefaction case-histories compiled from three earthquakes in Canterbury. The compiled, post-processed data is presented in a dense array structure, allowing researchers to easily access and analyze a wealth of information pertinent to free-field liquefaction response (i.e., triggering and surface manifestation). Research opportunities using this data include, but are not limited to, the training or testing of new and existing liquefaction-prediction models. The many methods used to obtain and process the case-history data are detailed in an accompanying data paper, as is the structure of the compiled digital file. Recommendations for analyzing the data are also outlined therein, including nuances and limitations that users should carefully consider.

Version 2 (this posting) supersedes Version 1 (doi:10.17603/ds2-ydfc-cd47). Updates include: (i) Quantification of PGA uncertainties (only median values were provided in Version 1); (ii) Addition of a python data frame to facilitate greater use (only a matlab data file was provided in Version 1); and (iii) removal of several redundant data points.