cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds24h50
title: REMEDIATION OF LIQUEFACTION EFFECTS FOR AN EMBANKMENT USING SOIL-CEMENT WALLS
title: in Remediation of Liquefaction Effects for an Embankment using Soil-cement Walls

description: This data report describes the model construction procedure and presents results for a centrifuge test of an embankment on a liquefiable foundation layer treated with soil-cement walls and subjected to seismic loads. The centrifuge experiment was carried out on the 9-m radius centrifuge at the Center for Geotechnical Modeling at UC Davis. The model corresponded to, in prototype units, a 28-m tall embankment of coarse medium dense Monterey sand (relative density, Dr ~= 85%) underlain by a 9-m thick saturated loose Ottawa sand layer with Dr of about 42%. Soil-cement walls were constructed through the loose sand layer over a 30-m long section near the toe of the embankment and covered with a 7.5-m tall berm. The soil-cement had an average unconfined compressive strength of 2.0 MPa and the walls had an area replacement ratio of 24% over the width of the embankment. The model was shaken with a series of scaled earthquakes having peak horizontal base accelerations ranging from 0.05g to 0.54 g. This data report describes the model construction procedure (e.g. sand pluviation, soil-cement wall construction, instrumentation), and presents results for the soil, embankment, and soil-cement walls.
DOI: 10.17603/ds2-bq31-2722
title: NHERI Summer Institute 2019 Presentations

description: The collection of presentations presented at the 2019 NHERI Summer Institute workshop during June 5-7, 2019, in San Antonio, Texas.
DOI: 10.17603/ds2-axrx-2z23
title: Background Data
title: in Rock Avalanche-Generated Mass Flow Observations

description: The "Rock avalanche impact area data description and sources" file describes the mapping methodology, attributes associated with the mapped rock avalanche deposits and a bibliography providing references for case histories or descriptions of the events included in the dataset.
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-g8st-r898
title: StEER: Noto Peninsula Earthquake Preliminary Virtual Reconnaissance Report
title: in StEER - 01 Jan 2024 Noto Peninsula Earthquake

description: On January 1, 2024, a powerful earthquake with a magnitude of Mj 7.6 (Mw 7.5) struck the Noto
Peninsula in Japan, at a focal depth of 10 km. This seismic event was characterized by a
significant under-ocean fault rupture over 100 km, leading to major crustal deformation, strong
ground motion, and a tsunami, with a notable 4.0 m uplift of the ocean floor.
The Japan Meteorological Agency (JMA) recorded a maximum intensity of 7 on their scale in Sika
Town and Wajima City, with substantial impacts felt up to 300 km away. Ground motion
parameters such as Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) exceeded
1,000 cm/s2 and 100 cm/s, respectively, suggesting potential structural damage beyond the
design basis for extremely rare seismic events. Acceleration and displacement spectra at the sites
with extensive building and lifeline damage show high response in the 1.0-2.0 sec range, likely
due to relatively soft soil conditions.
The earthquake severely impacted Ishikawa Prefecture, damaging at least 96,000 structures,
including traditional timber houses, historical temples, and shrines. Damage was exacerbated by
soft soil conditions, particularly affecting aged timber housing and low-rise non-ductile reinforced
concrete (RC) buildings. Steel buildings generally survived the shaking unless they had poor
welding details. Significant damage to steel structures also included buckling of braces in parking
structures and damage to cladding materials.
description: This Preliminary Virtual Reconnaissance Report (PVRR) represents a collaboration between
StEER and the Disaster Prevention Research Institute (DPRI) at Kyoto University to study the
2024 Noto Peninsula Earthquake. As DPRI had direct access to the affected areas, the PVRR
uses both third party and DPRI-field-collected data to:
1. Provide an overview of the earthquake’s intensity and tectonic setting to characterize the
strong motion impacts to the built environment.
2. Overview the regulatory environment and construction practices in the affected area.
3. Synthesize preliminary reports of damage to buildings and other infrastructure.
4. Provide societal lessons learned and recommendations for continued study of this event
by StEER and the wider engineering reconnaissance community.
DOI: 10.17603/ds2-gpzr-sy41
title: ISROC Dataset for: Large boulder deposits by tsunami waves along the Ionian coast of south-eastern Sicily (Italy)
title: in Inundation Signatures on Rocky Coastlines (ISROC) Global Coastal Boulder Deposits Datasets Version 1

description: This document contains standardized data as an Excel and NC file and explanatory notes for "Large boulder deposits by tsunami waves along the Ionian coast of south-eastern Sicily (Italy)." The project is located in Sicily and includes 55 coastal boulder deposits from the tsunami. The goal is to determine the origin of these boulders using dating, historical data, hydrodynamic estimates, and modeling.
description: This project is a collection of datasets on studies about coastal boulder deposits worldwide. Each document is a unique dataset that contains data from a published study. The document's name reflects the name of the associated paper, and all authors of papers are given credit in the respective document. Each dataset's data is standardized into an ISROC-formatted Excel and NC File. Also, every dataset has explanatory notes, which contain a data dictionary explaining data parameters and appropriate units, Some datasets have the raw data given to ISROC by the paper's authors. By creating a database in the public domain, ISROC hopes to promote academic collaboration in the field. ISROC, an NSF-funded research network, funds this project.
DOI: 10.17603/ds2-j39s-bt13
title: NHERI Science Plan International Workshop 2019

description: The presentations made at the March 2019 international workshop for the continued development of the NHERI 5 Year Science Plan.
DOI: 10.17603/ds2-k9pt-y451
title: MsRI-EW: Conference to Identify Research Infrastructure Concepts for a National Full-Scale 200 mph Wind and Wind-Water Testing Facility

description: To address windstorm related hazards (e.g., high wind, surge, wave, debris, flood, rain) as one of the grand challenges in U.S. engineering research, a Mid-Scale Research Infrastructure (MsRI) conference was held to (a) identify gaps in existing mid-scale research infrastructure, and (b) as-sess design options for and the economic and technical feasibility of a “Full-Scale 200 mph Wind and Wind-Water Testing Facility.” A multi-disciplinary group of 50+ experts (APPENDIX A) convened virtually for two days to “dream big” and consider the potential need for such a national facility. The conference agenda (APPENDIX B) was designed to define the need for the MsRI for full-scale testing of buildings and other structures under the combined effects of hurricane’s multi-hazards, including wind, rain, debris, surge, wave, and flooding. The research areas to be enabled by such a unique MsRI facility had to be carefully evaluated, revised (as needed), and augmented to identify current and emerging knowledge gaps. The conference aimed to develop an overview of an MsRI facility that can deliver unparalleled full-scale holistic testing capabilities to realistically investigate real-world systems or sub-systems under a hurricane’s multiple component stresses.
DOI: 10.17603/ds2-mqrp-8163
title: Component testing of the pressurized sand damper assessing the design parameters effects
title: in Component testing of the pressurized sand damper

description: This study presents results from cyclic testing on various configurations of a recently developed pressurized sand damper in which a steel sphere is moving within a cylindrical tube filled with sand that is under pressure. The experimental campaign investigated the effects of the key design parameters of the damper, namely, the effect of the clearance between the moving sphere and the cylindrical tube and the effect of the overall length of the damper to its force output. The recorded force–displacement loops when normalized to the strength of the pressurized sand damper reveal remarkable order with stable behavior and confirm that the force output is nearly rate-independent. The paper also
presents recorded force–displacement loops where the sphere mounted on the piston rod is replaced with a bolt where only the bolt head and nut are protruding from the moving piston rod. With this configuration, the pinching behavior of the pressurized sand damper at longer strokes is suppressed without generating large forces at longer strokes.
description: This data depot includes results from the cyclic testing on various configurations of a recently developed pressurized sand damper in which
a steel sphere is moving within a cylindrical tube filled with sand that is under pressure. The experimental campaign investigated the effects of
the key design parameters of the damper, namely, the effect of the clearance between the moving sphere and the cylindrical tube and the effect
of the overall length of the damper to its force output. The recorded force–displacement loops when normalized to the strength of the pressurized sand damper reveal remarkable order with stable behavior and confirm that the force output is nearly rate-independent. The data depot also includes recorded force–displacement loops where the sphere mounted on the piston rod is replaced with a bolt where only the bolt head and nut are protruding from the moving piston rod. With this configuration, the pinching behavior of the pressurized sand damper at longer strokes is suppressed without generating large forces at longer strokes.
DOI: 10.17603/ds2-zrn5-3g34
title: Research Experiences for Undergraduates (REU), NSF NHERI 2024: CONVERGE Training Module: Maternal Health Research and Practice in Hazards and Disasters

description: This CONVERGE Training Module focuses on historic barriers surrounding maternal health in hazards and disasters and the ways that pregnant, postpartum, and lactating people can help build community resilience in these settings, both domestically and internationally. Additionally, it underscores the necessity for systemic change through application of research findings and improved mitigation and recovery strategies and policies to promote maternal empowerment in the emergency management cycle.
DOI: 10.21979/n9/xu9pky
title: Ray-Based Body Wave Tomography

description: Large Necessary Dependencies.
DOI: 10.17603/ds2-1vvz-nc16
title: Waves and currents in the surf during DuneX
title: in Surfzone Energy Cascades: Alongshore array of current meters and pressure gages in 2 m depth, and one gage in ~1 m depth, Duck, NC

description: Alongshore array of ADVs in 2-m water depth and one ADV in inner surfzone
description: This project is to address hypotheses about two-dimensional inverse energy cascades. However, the data can be used for other studies, including comparing model simulations with observations on the surf zone, investigating the alongshore variability of waves and currents in 2 m depth, providing ground truth for remote sensing studies.
DOI: 10.17603/ds2-7hbt-ef65
title: ADCIRC+SWAN Runs for Hurricane Ike and Hurricane Ida Using Various Source Terms
title: in Efficacy of reduced order source terms for a coupled wave-circulation model in the Gulf of Mexico

description: During hurricanes, coupled wave-circulation models are critical tools for public safety. The standard approach is to use a high fidelity circulation model coupled with a wave model that uses the most advanced source terms. As a result, the models can be computationally expensive and so this study investigates the potential consequences of using simplified (reduced order) source terms within the wave model component of the coupled wave-circulation model. The trade-off between run time and accuracy with respect to observations is quantified for a set of two storms that impacted the Gulf of Mexico, Hurricane Ike and Hurricane Ida. Water surface elevations as well as wave statistics (significant wave height, peak period, and mean wave direction) are compared to observations. The usage of the reduced order source terms yielded significant savings in computational cost. Additionally, relatively low amounts of additional error with respect to observations during the simulations with reduced order source terms are observed in our computational experiments. However, large changes in global model outputs of the wave statistics were observed based on the choice of source terms particularly near the track of each hurricane.
description: This is the accompanying simulations from the paper published with the title "Efficacy of reduced order source terms for a coupled wave-circulation model in the Gulf of Mexico". The ADCIRC version v54.
DOI: 10.17603/ds2-vyy3-0757
title: Field testing of the developed 3D FWI method using a drop weight at Newberry, FL
title: in Geotechnical Site Characterization with 3-D Seismic Waveform Tomography

description: Field tests were performed to assess the ability of the developed 3D FWI method in characterizing subsurface features, and in void detection. Data was collected using the drop of a 100 lb weight from a certain height for each shot . This acts as a pulse source containing many frequencies. The dataset obtained from this analysis was analyzed and it was revealed that the developed 3D FWI method could successfully detect variable subsurface layering features and voids using a 2D array of sensors on the surface. The data obtained as part of the experiment is stored in data files for each shot location. Each data file contains information gathered by all the channels.
description: We have successfully developed an advanced 3D FWI method using surface-based seismic wavefields for geotechnical site characterization. The method is based on the solution of 3D elastic wave equations, and Gauss-Newton inversion approach. The capabilities of the developed 3D FWI method has been tested on both synthetic and several field experimental datasets. The analyzed results from synthetic datasets show great capabilities of the 3D FWI method in characterizing laterally variable low- and high-velocity layers, and in detecting buried voids at various depths. Comparing the conventional FWI analyses based on the classic cross-adjoint inversion, our method based on the Gauss-Newton inversion provides more accurate and higher resolution inverted results. Accurate results are also obtained from field experiments at four different test sites in Florida. Known cavity (culvert), unknown buried voids (pre-collapsed sinkholes) at both shallow depths of 5 m to 10 m and larger depths up to 40 m, and variable soil/rock layers are well characterized and confirmed by the ground truth.
DOI: 10.17603/ds2-n1xq-5a58
title: Matlab Codes for Computing FOSID
title: in FOSID: A Novel Fractional Order Spectrum Intensity Measure for Probabilistic Seismic Demand Modeling of Bridges under Liquefaction and Transverse Spreading

description: An appropriate seismic intensity measure (IM) for response prediction is central to reliable probabilistic seismic demand modeling of structures and subsequently, risk and resilience quantification. Fractional order IMs have shown the potential to yield improved demand models in recent studies. To further increase confidence in demand models, a novel Fractional Order Spectrum intensity measure considering Integral period and Damping ratio (named FOSID) is proposed. MATLAB/Simulink codes for computing FOSID are provided in this project as well as information about them in the Readme file. Given an input ground acceleration time series, users can easily obtain FOSID by executing the main file “FOSID_example.m” with the definition of the three key parameters in FOSID, including the fractional order, damping ratio, and upper bond of integral period. It is worth noting that FOSID has been found superior than Housner intensity (HI) – an optimal traditional IM, and the average spectral acceleration (Saavg) – a state-of-the-art non-fractional-order IM, for bridges under earthquake-induced liquefaction and lateral spreading hazard. It is expected that the benefits of FOSID can be most readily observed for long and/or tall structures with large fundamental periods or for structures in complex geotechnical conditions with significant nonlinear behavior and period elongation.
description: The novel fractional order spectrum intensity measure can be computed using the provided Matlab and Simulink codes. Users can define the key parameters of FOSID in the main file "FOSID_exmaple.m" for a given input ground motion example "Acc(g).acc". The value of FOSID is the outcome, which is included in the output file "FOSID_result.mat".
DOI: 10.17603/ds2-xhx1-hp60
title: Database of Flanged Reinforced Concrete Squat Walls

description: Flanged reinforced concrete (RC) squat walls are widely used in conventional buildings and nuclear facilities, due to their capabilities of meeting certain architecture demands and providing significant lateral strength and stiffness in both principle directions. Despites their popularities and advantages, understanding for these walls are still limited, due to the complexities brought by the non-rectangular cross-section shaped and the relatively small shear span ratio. Moreover, current building codes are mainly developed for rectangular slender walls, which exhibit significant scatters in predicting peak shear strength of effective stiffness to these walls. To facilitate future investigations, a database containing comprehensive information about 152 flanged RC squat walls is presented in this project. Researchers are encouraged to continuously upgrade this database.
DOI: 10.17603/ds2-z5sx-zh27
title: SimCenter Earthquake Testbed: San Francisco, CA

description: This project contains the inputs (inventories, rulesets, hazard data), outputs (enriched inventory data, results), and documentation used in this release of the SimCenter’s San Francisco Bay Area testbed.
DOI: 10.17603/ds2-7433-gy58
title: Photography Basics for Researchers—CONVERGE Extreme Events Research Check Sheets Series

description: This check sheet outlines ethical and logistical considerations for researchers who wish to use photography as a tool to enhance their findings. The check sheet also contains tips for photo composition, types of photos to include in research and public outreach, and other techniques for maintaining visual interest in a project. 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-vmdh-y691
title: Natural Hazards Research Summit 2022: Advancing FSI Knowledge to Characterize Flexibility Effects in Hurricane-Induced Structural Responses

description: Fluid-structure interaction (FSI) phenomena involve coupling between the laws of fluid and structural mechanics. Many of these phenomena are encountered in civil infrastructure, including the interaction of coastal structures with fluid motions generated by hurricanes. As the human footprint in coastal regions increases, understanding this interaction becomes more and more critical. Creating fundamental knowledge to reliably quantify the force demand on coastal structures by accounting for Fluid-Structure Interaction (FSI) forms the basis of our research.
DOI: 10.5281/zenodo.15577703
title: Dataset for BadTS: Benchmarking Anomaly Detection in Low-Quality Astronomical Time Series
DOI: 10.5281/zenodo.15577704
title: Dataset for BadTS: Benchmarking Anomaly Detection in Low-Quality Astronomical Time Series
DOI: 10.17603/ds2-4rnb-j321
title: Alaska 1m Surge Events - Nome, Red Dog Dock, Unalakleet (1992 - 2022)
title: in Alaska Storm Surge Events

description: Storm surge events where surge exceeded 1m at one of the three following NOAA tide stations: (1) Nome (2) Red Dog Dock (3) Unalakleet from the years 1992 - 2022 where identified and hindcasted using ADCIRC.  Events where identified by looking at the difference between the predicted tide and the observed water levels at NOAA tide gauge stations. Events across all three stations were merged into a set of 115 non-overlapping events. Input forcing for the identified events where pulled from NCAR's CFSv1/v2 data set, including barometric pressure, winds, and ice concentration. A lightweight Alaska mesh with with ~440k nodes and ~850k triangular elements was used with the meteorological forcing to generate hindcasts for all 115 identified events. This base data-set of storms comprises of one of the more comprehensive and complete sets of all storm surge events along the coast of western Alaska. The data is presented in a clean and re-usable format to for future studies, in particular as a base data-set to generate features for training machine learning models.
description: Storm surge events where surge exceeded 1m at one of the three following NOAA tide stations: (1) Nome (2) Red Dog Dock (3) Unalakleet from the years 1992 - 2022 were identified and hindcasted using ADCIRC.  Events where identified by looking at the difference between the predicted tide and the observed water levels at NOAA tide gauge stations. Events across all three stations were merged into a set of 115 non-overlapping events. Input forcing for the identified events where pulled from NCAR's CFSv1/v2 data set, including barometric pressure, winds, and ice concentration. A lightweight Alaska mesh with with ~440k nodes and ~850k triangular elements was used with the meteorological forcing to generate hindcasts for all 115 identified events. These hindcasts are meant to be used in future studies, in particular as base data-set to generate features for training machine learning models.