cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds2-vkgg-9q70
title: Heavily Cemented Model - GLH09s
title: in Liquefaction resistance of MICP treated sands

description: A heavily cemented model was saturated with a de-aired viscous fluid. The model was subjected to a series of shaking events at 80-g. Shear wave velocity and cone penetration measurements were obtained at select times.
description: A set of 1-m radius centrifuge tests on saturated loose Ottawa sand models treated to various cementation levels and subjected to multiple shaking events.  Changes in cone penetration resistance and shear wave velocity are monitored throughout each test.
DOI: 10.17603/ds2-w5vx-4k84
title: Australia/Oceania
title: in Rock Avalanche-Generated Mass Flow Observations

description: GIS mapping of the total area impacted primarily by coarse, rocky debris from rock avalanches (defined as Zone 1 deposits), as well as the total area impacted by sediment mass flows resulting from the rock avalanche events (defined as Zone 2 deposits). The data collected utilized published mapping, aerial and satellite imagery, topographic data, and terrain analysis.
description: Collection of rock avalanche case histories where the fragmented rock material overran sediments, including cases where the sediment was mobilized into a mass flow during the event. Impact areas have been mapped and basic descriptive attributes  were collected for each case. Events in this dataset include prehistoric events (maximum age approximately 8300 years before present) up to modern events. The events included in this dataset have been described previously in literature, but not combined into a single dataset with consistent descriptions of the coarse, rocky deposits and the sediment mass flows (if present). The data was used in the development of empirical relationships to estimate the runout distance and impact area for both the coarse, rocky debris and sediment mass flows stochastically for potential future events. The event description methodology, the data format and bibliography for case histories are described in the "Rock avalanche impact area data description and sources" file included. This methodology and data format are proposed as a template for the description of an expanded global dataset of events to be compiled. Spatial data is provided as shapefiles, which can be viewed within DesignSafe using the QGIS application within the Workspace.
DOI: 10.17603/ds2-0ddt-ss87
title: Geotechnical and geo-structural reconnaissance of the Western European Flood July 2021
title: in GEER reconnaissance mission: Western European Floods Summer 2021

description: Types of damages: bridge and infrastructure damage, damage to residential buildings, erosion, scour, riverbank failures
Methods: photos, description, lidar, drone imagery and structure from motion, multispectral imagery, soil samples and testing
description: This project documents the observations of geotechnical and geo-structural damage and failure to infrastructure, buildings, utility networks, and the river course due to the 2021 Western European floods.
DOI: 10.17603/ds2-0qdj-n692
title: Continuum-element modeling of 2-D interlocking TeSA walls
title: in Simulation Models and Fragility Functions for Tessellated Structural-Architectural Reinforced Concrete Walls

description: This project introduced a new modular reinforced concrete shear wall system designed for replaceability and resilience after extreme loading as well as architectural appeal. The walls are called tessellated structural-architectural (TeSA) walls because they consist of interlocking tiles (modules) with repetitive shapes (tessellations) and are intended to satisfy both structural and architectural demands. Tiles of TeSA systems can be interlocking in one or two directions, and can incorporate self-centering post-tensioning. This data set includes: 
(1) Continuum element models of 1-D and 2-D interlocking reinforced concrete TeSA walls. The models were created using a commercial finite element software (Abaqus). Walls with 1-D interlocking tiles had self-centering strands. Load-displacement and strand force-displacement (when applicable) data are presented for static pushover analyses. Wall design details are provided for the walls analyzed. 
(2) Fiber element model of a 1-D interlocking TeSA wall with self-centering strands. The model was created using OpenSees. Load-displacement and strand force-displacement data are presented for static pushover analyses. Wall design details are also provided. 
(3) Fragility functions for two 1-D interlocking TeSA walls with varying tile patterns. The functions were created using the fiber element models described above, captured uncertainties in applied axial loading, tile-interface properties, concrete compressive strength, modeling approach, and used lateral drift as the demand parameter. Design details of the walls, for which fragility functions were generated, are also provided.
description: 2-D interlocking Tessellated Structural-Architectural (TeSA) shear walls were modeled. Each tile is modeled using continuum elements. Interaction between tiles is captured using surface-to-surface contact algorithms.The models were created in Abaqus. TeSA walls were reinforced concrete and were subjected to static and monotonically increasing lateral loading on top. The data set includes input files, example output files, and the details of the different 2-D interlocking TeSA walls for which the models were created.
DOI: 10.17603/ds2-3t6s-r796
title: Natural Hazards Research Summit 2022: Fragility Functions and Experimental Investigation for Hurricane-Induced Wind Loads of Elevated Coastal Houses

description: Extreme wind events such as hurricanes are the main causes of damage to coastal residential houses in the United States. It is recommended to elevate coastal houses on columns to mitigate hurricane-induced flooding and storm surge hazards. However, post-event forensic studies reported that the envelope components of elevated houses experienced severe wind-induced damage (e.g., underside of the elevated floor, walls, and roofs) which, in many cases, has led to total collapse of the building. Therefore, studying hurricane-induced risks to these houses is important to reduce the losses and to enhance the resilience of coastal communities. Herein, this poster has two objectives: the first is to assess the performance and vulnerability of elevated houses under wind loads, and the second is to accurately determine the wind loads acting on elevated houses considering their unique aerodynamics characteristics and their exposure to stronger winds. For the first objective, empirically-based fragility functions were developed by utilizing damage data from post-hurricane damage assessment reports for both elevated and slab-on-grade houses, respectively. These houses were surveyed after Hurricanes Irma, Harvey, and Michael. For the second objective, this poster presents the major findings of extensive large-scale aerodynamic experiments conducted at the NSF-NHERI Wall of Wind (WOW) Experimental Facility (EF). The developed fragility curves highlighted the higher vulnerability of elevated houses compared to slab-on-grade houses. Furthermore, the aerodynamic test results showed that the underneath floor of elevated houses experiences high suction wind pressures around columns and edges which explain the field damage observations for these regions.
DOI: 10.17603/ds2-5fe4-8750
title: Research Experiences for Undergraduates (REU), NHERI 2022: Higher-order Turbulence and its Effects on Structural Loads and Response: A Study on Experimental Equivalence

description: This research investigates differing higher-order turbulence for second-order equivalent wind fields and its effects on peak wind pressures on low-rise structures. Its major goal was to develop and employ multiple methods to define ‘statistical equivalence’ and investigate whether the validation of the hypotheses is sensitive to the chosen definition of statistically equivalent (within the noise) data. This work supported research led by a Ph.D. student and faculty mentor. It contributes to the wind engineering field.
DOI: 10.17603/ds2-7vbg-3f39
title: Safely Conducting Quick Response Research: Tips for Graduate Students and Supervisors—CONVERGE Extreme Events Research Check Sheets Series

description: This check sheet contains a list of considerations for safe and effective field research, from pre-planning through post-fieldwork debriefing. Graduate student or other early career researchers and their mentors and research supervisors may use the check sheet to create a plan and associated contingencies for a secure fieldwork experience. About the CONVERGE Extreme Events Research Check Sheets Series: The National Science Foundation-supported CONVERGE facility at the Natural Hazards Center at the University of Colorado Boulder has developed a series of short, graphical check sheets that are meant to be used as researchers design their studies, prepare to enter the field, conduct field research, and exit the field. The series offers best practices for extreme events research and includes check sheets that are free to the research community. More information is available at: https://converge.colorado.edu/resources/check-sheets.
DOI: 10.17603/ds2-c3q7-vv73
title: Time-Activity Diary Instrument
title: in Personal Heat Exposure

description: This project was a component of the larger NSF funded Three City Heat and Electrical Failure AdapTation (3HEAT) Study, which aimed to assess the health impact of a simultaneous city-wide power outage and heatwave in the cities of Phoenix, Arizona; Detroit, Michigan; and Atlanta, Georgia. This subset of the larger 3HEAT project aimed to measure the personal heat exposure of Phoenix residents. Additionally we related residents' personal heat exposure profiles to their daily activities, cooling methods, and thermal comfort.  The data from this project could be reused to better understand the relationship between heat exposure, thermal comfort, and daily activity at an individual scale. This data could also be used in combination with similar datasets to explore these relationships across different cities or to compare different methods of assessing personal heat exposure.
description: This file contains a blank copy of the time-activity diary that was provided to each research participant. The time-activity diary provides instructions to complete the form, space to record data, and an example of a completed time-activity diary. The time-activity diaries were completed on physical paper forms and later digitized by the research team.
DOI: 10.17603/ds2-ewwg-7v76
title: Tension coupon tests on ASTM A992 steel at tempertaures ranging from 20 deg C to 1000 deg C.
title: in Elevated Tempertaure Properties of ASTM A992 Steel

description: This project collected test data on the elevated temperature properties of ASTM A992 steel. This data is intended to support development of performance-based structural fire engineering for steel structures. A detailed description of the test setup, test specimens, instrumentation, and data reduction techniques is available in the Ph.D. dissertation by Lee listed under Related Work.
description: Samples of ASTM A992 steel were tested to establish elevated temperature stress-strain curves. Tests were conducted at the following temperatures (all in deg C): 20, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000. Tests were conducted as steady-state temperature tests, where the temperature is held constant while the tension coupon is loaded. The outcome of these tests was a dataset of stress-strain curves at various temperatures. The data can be used to support the modeling and design of steel elements and structures subject to fire. Further details on these tests can be found in the following publication: Lee, J., Morovat, M., Hu, G., Engelhardt, M., and Taleff, E., “Experimental Investigation of Mechanical Properties of ASTM A992 Steel at Elevated Temperatures.” Engineering Journal, American Institute of Steel Construction, Vol 50, No. 4, Fourth Quarter 2013, p 249-272.
DOI: 10.17603/ds2-exeg-dy75
title: National Liquefaction Loss Database

description: This dataset consists of estimated liquefaction losses associated with historical US events from 1964 - 2019. While many papers and datasets exist regarding the damage caused by individual liquefaction events, liquefaction loss data is rarely aggregated and presented to the public for future loss estimating purposes.
DOI: 10.17603/ds2-npam-j056
title: Natural Hazards Research Summit 2022: NHERI CONVERGE
DOI: 10.17603/ds2-q3tf-3129
title: Brace Test
title: in Computational Simulation of Ductile Fracture in Structural Steel Systems

description: This project enhanced our understanding of the process by which steel structures incur fracture when subjected to strong earthquake effects. The fracture in this case is termed "ductile", because it is driven by the development of inelastic (plastic) deformations. The resistance to fracture initiation and propagation also depends on the stress conditions that a particular region of a structure may experience. Additionally, it may depend on the metal forming process, by which flat steel plates are deformed to give a desired profile shape for a steel member. There is a concern that metal forming may lead to regions in a steel profile, such as the corner regions of a tube profile, where the material resistance to rupture may be different than that in regions away from the corners. 
This research included both physical experimentation and computational simulation. Physical experimentation on small steel coupons up to fracture allowed an understanding of the crack formation and propagation process which may occur at critical regions of steel structural members having a hollow rectangular (tube) cross-section. Metal forming was found to have a fairly minor effect on fracture resistance. Further experimental tests on a structural brace having a tubular cross-section, together with computational simulation, provided insights into the process by which local buckling in the thin walls of the tube entails large localized deformations which ultimately cause the formation and propagation of cracks until full fracture of the brace.
description: The test consisted of a 6×4×1/4 steel hollow section subjected to cyclic axial loading. The experiment was conducted to evaluate the capability of low-cycle fatigue laws, calibrated with data from coupon tests, to predict fracture initiation in a structural component. A computational model was built to obtain the stress-state data at the observed fracture initiation location. The collected experimental data can be used to continue studying fracture due to low-cycle fatigue in structural components.
DOI: 10.17603/ds2-t76g-p598
title: BARGAP: waves, currents, and bathymetry near dredged channels in the surfzone seafloor
title: in BARGAP: waves, currents, and bathymetry near dredged channels in the surfzone seafloor

description: Channels were dredged across the surfzone seafloor to generate rip currents. After dredging, pressure sensors were deployed near and within the channels, and the bathymetry was surveyed often. Under certain wave conditions, rip currents were generated.
description: Channels were dredged across the surfzone seafloor with a Vietnam-era landing craft (Mike Boat). After dredging pressure gages and current meters were deployed near and within the dredged channel. For some wave conditions a strong (1 m/s) rip current was generated. The waves and currents were measured at 2 Hz and the channel was surveyed daily as it slowly evolved.
DOI: 10.17603/ds2-vjre-t833
title: Compendium of data sources addressing disasters and health

description: The need for high quality, accurate, broad, and interoperable datasets to improve decision making in healthcare settings is a critical need which is highlighted in several government reports, strategies, after action reports, business plans, and scientific articles. Accordingly, this project sought to address this vital need by collecting, organizing and, describing a wide variety of publicly available data sources that sit at the intersection of disasters and health. The resultant compendium of 73 disaster health-related data sources is organized by category and theme for ease of use. It is designed to support both research and operational communities to conduct disaster research, implement data-driven decision making in healthcare-related contexts to augment operational efficacy and ensure better outcomes in the face of increasingly frequent and devastating disasters and catastrophes, while also identifying areas for further data development.
DOI: 10.17603/ds2-vnk8-0b64
title: Visual Inspection
title: in RAPID: Performance of Reinforced Concrete Structures with Externally Bonded Fiber Reinforced Polymer Composite Retrofits in the 2018 Anchorage, Alaska Earthquake

description: Externally bonded fiber reinforced polymer (EBFRP) composites can be used to seismically retrofit structures in a simple and economical manner. However, lack of documented evidence of their performance during an earthquake still limits their widespread adoption. In this project, the effects of the November 30, 2018, earthquake (magnitude 7.0) in Anchorage, Alaska, on the performance of EBFRP composite retrofits in reinforced concrete buildings, were studied. This study, for the first time, provides information on the performance of EBFRP retrofitted structures in an earthquake that occurred in the United States. 
The main objective of this project is to collect perishable data on EBFRP response during the 2018 Alaskan earthquake to improve understanding of the performance of EBFRP-retrofitted structures. The data collection activities in Anchorage, Alaska, coordinated with the National Institute of Standards and Technology (NIST), included the following: (1) photographic documentation of damage to EBFRP retrofit systems (e.g., delamination, rupture, and environmental degradation), and (2) identification of in-situ characteristics of the EBFRP utilizing non-destructive (e.g., acoustic sounding and infrared thermography) and semi-destructive (e.g., bond pull-off test) methods. Where permissible, small samples of EBFRP were collected for chemical and thermal analysis to determine the extent of environmental degradation in EBFRP.
description: The reconnaissance team inspected five reinforced concrete structures with externally bonded EBFRP reinforcement in Anchorage, AK. Most of the EBFRP composites were employed as seismic retrofit systems, and others were in use for gravity strengthening and repair. Visual inspections involved photographic evidence collection and conversations with building managers or building owners. When possible, historical information on the FRP material installation, manufacturer, retrofit purpose, and inspection practices were obtained. FRP retrofit access varied significantly at different sites and within sites.
DOI: 10.15468/dl.xhuajd
title: Occurrence Download

description: A dataset containing 1377 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Geometry POLYGON((-4.51315 36.64152,-4.43268 36.64152,-4.43205 36.71018,-4.51656 36.70943,-4.51315 36.64152))",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 1377 records from 41 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015630-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17603/ds2-20sg-9914
title: Natural Hazards Research Summit 2022: Relative Influence of Source and Ground Motion Correlation for Multiple Sites in the Central and Eastern United States

description: When assessing seismic risk to multiple sites, several different causes of correlation need to be considered. These include correlation induced by the seismic source, ground motion prediction errors, infrastructure fragility and failure consequences. This poster focuses on the relative influence of source and ground motion correlation, specifically in the context of the characterization of seismic hazard in the Central and Eastern United States (CEUS). Given the lack of mapped faults in the CEUS, the seismic hazard is characterized by area or grid source zones derived from historic seismicity. Therefore, the correlation in seismic risk at multiple sites is inherently limited by the spatial distribution of the assumed grid. Assessing this source correlation is valuable to practicing engineers because it will help establish the tradeoffs between effort and accuracy when characterizing the correlation of the ground motion errors.
DOI: 10.17603/ds2-3epf-nm38
title: State of the Community Report for Dallas-Fort Worth-Arlington, Texas Metropolitan Area: 2020 Population and Economic Technical Report

description: In order to understand current and projected needs within a community, planners utilize methodological techniques to help understand projected demands within a community. To do so, this report observes demographic and regional economic data to overview the projected needs of the Dallas-Fort Worth-Arlington Metropolitan Statistical Area (DFW MSA). Demographic data used will show analysis of population size and change, composition by age and race, population projections, and more. Additionally, this report ties economic analysis to show features such as job type and job growth in order to understand industry needs and the economic basis of the region. Following the economic report, there is an analysis of the social vulnerability of the DFW MSA. We conclude by offering methods to alleviate social inequality and social vulnerability within the area. This report is designed to be a transparent document that can facilitate communication among stakeholders about best steps moving forward within the DFW metropolitan area.