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Engineering Soil Classification and Geotechnical Measurements in Lares, Naranjito, and Utuado, Puerto Rico The data include soil texture, soil-water, and estimated soil strength properties for soil map units and from geotechnical investigations of landslide areas affecting highways in the municipalities of Lares, Naranjito, and Utuado, Puerto Rico. The map units are derived from published soil mapping (https://websoilsurvey.sc.egov.usda.gov/app/) and have been grouped by municipality, Unified Soil Classification System symbol, and order-of-magnitude ranges of hydraulic conductivity to create generalized map units for assigning soil-water parameters and soil-strength parameters. Each group (generalized unit) includes one or more soil map units. The groups are numbered sequentially from one (1) for each municipality with... Tags: Geomorphology, Lares, Naranjito, Puerto Rico, Soil Sciences, All tags... USGS Science Data Catalog (SDC), Utuado, engineering geology, geoscientificInformation, geotechnical measurements, landslides, permeability, porosity, Fewer tags St. Louis Geotechnical Database, v2003 The St. Louis area has experienced minor earthquake damage at least 12 times in the past 205 years. The St. Louis metropolitan area, with a population of about 2.8 million, faces earthquake hazard from large earthquakes in the New Madrid and Wabash Valley seismic zones, as well as a closer region of diffuse historical and prehistoric seismicity to its south and east. Also, low attenuation of seismic energy in the region and a substantial number of historic older unreinforced brick and stone buildings make the St. Louis area vulnerable to moderate earthquakes at relatively large distances compared to the western United States. This geotechnical database was compiled by James Palmer and others at the Missouri Department... Tags: EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, USGS, All tags... USGS Science Data Catalog (SDC), United States, earthquake occurences, earthquakes, engineering geology, geoscientificInformation, hazards, maps and atlases, Fewer tags Map data from landslides triggered by Hurricane Maria in four study areas in the Utuado Municipality, Puerto Rico In late September 2017, intense precipitation associated with Hurricane Maria caused extensive landsliding across Puerto Rico. Much of the Utuado municipality in central Puerto Rico was severely impacted by landslides. Landslide density in this region was mapped as greater than 25 landslides/km2 (Bessette-Kirton et al., 2019). In order to better understand the controlling variables of landslide occurrence and runout in this region, four 2.5-km2 study areas were selected and all landslides within were mapped in detail using remote-sensing data. Included in the data release are five separate shapefiles: geographic areas representing the mapping extent of the four distinct areas (map areas, filename: map_areas), initiation... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hurricane Maria, Landslides, Puerto Rico, USGS Science Data Catalog (SDC), Utuado, All tags... Utuado, Puerto Rico, debris flows, engineering geology, geomorphology, hurricane, landslide inventory, landslide mapping, landslides, remote sensing, Fewer tags Results from frequency-ratio analyses of soil classification and land use related to landslide locations in Puerto Rico following Hurricane Maria To better understand factors potentially contributing to the occurrence of rainfall-induced landslides in Puerto Rico, we evaluated the locations of landslides there following Hurricane Maria (Hughes et al., 2019) and potential contributing factors. This data release provides results of evaluations of landslide locations compared to soil classification and land cover, which involved frequency-ratio analyses (for example, Lee and Pradhan, 2006; Lee et al., 2007; He and Beighley, 2008; Lepore et al., 2012; Chalkias et al., 2014). Soil classification data were obtained from the U.S. Department of Agriculture Natural Resources Conservation Service (2018) and land cover data were obtained from the Puerto Rico Gap Analysis... Categories: Data; Tags: Geomorphology, Puerto Rico, USGS Science Data Catalog (SDC), engineering geology, landslides Map of slope-failure locations in Puerto Rico after Hurricane María In Puerto Rico, tens of thousands of landslides, slumps, debris flows, rock falls, and other slope failures were triggered by Hurricane María, which made landfall on 20 September 2017. “Landslide” is used here and below to represent all types of slope failures. This dataset is a point shapefile of landslide headscarps identified across Puerto Rico using georeferenced aerial and satellite imagery recorded following the hurricane. The imagery used includes publicly available aerial imagery obtained by the Federal Emergency Management Agency (FEMA; Quantum Spatial, Inc., 2017), aerial imagery obtained by the National Oceanic and Atmospheric Administration (NOAA; NOAA, 2017), and several WorldView satellite imagery... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Puerto Rico, USGS Science Data Catalog (SDC), engineering geology, landslides Map data from landslides triggered by Hurricane Maria in three study areas in the Lares Municipality, Puerto Rico In late September 2017, intense precipitation associated with Hurricane Maria caused extensive landsliding across Puerto Rico. Much of the Lares municipality in central-western Puerto Rico was severely impacted by landslides. Landslide density in this region was mapped as greater than 25 landslides/km2 (Bessette-Kirton et al., 2019). In order to better understand the controlling variables of landslide occurrence and runout in this region, three 2.5-km2 study areas were selected and all landslides within were mapped in detail using remote-sensing data. Included in the data release are five separate shapefiles: geographic areas representing the mapping extent of the four distinct areas (map areas, filename: map_areas),... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Hurricane Maria, Puerto Rico, USGS Science Data Catalog (SDC), Utuado, All tags... Utuado, Puerto Rico, debris flows, engineering geology, geomorphology, hurricane, landslide inventory, landslide mapping, landslides, remote sensing, Fewer tags Data for Laboratory simulation of earthquake-induced damage in lava dome rocks We performed laboratory time-dependent creep and stress-oscillation earthquake simulations in uniaxial loading in compression and tension on four blocks of porphyritic dacite collected from pyroclastic deposits of Mt. Fugen, of the Unzen-dake volcanic complex in Japan (referred to as ‘Unzen volcano’). Experiments were carried out in the Experimental Volcanology and Geothermal Research Laboratory at the University of Liverpool. Loading experiments were carried out in a 100 kN Instron 8800 uniaxial press at room temperature using both compression tests, and Brazilian disk tests to provide the indirect tensile strength (hereafter referred to as tensile strength/tension tests). Load was recorded by an Instron Dynacell... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Seismology, USGS Science Data Catalog (SDC), Unzen Volcano, Japan, Volcanology, earthquake, All tags... engineering geology, landslide, volcanology, Fewer tags Map data from landslides triggered by Hurricane Maria in two study areas in the Las Marías Municipality, Puerto Rico In late September 2017, intense precipitation associated with Hurricane Maria caused extensive landsliding across Puerto Rico. Much of the Las Marías municipality in central-western Puerto Rico was severely impacted by landslides. Landslide density in this region was mapped as greater than 25 landslides/km² (Bessette-Kirton et al., 2019). In order to better understand the controlling variables of landslide occurrence and runout in this region, two 2.5-km² study areas were selected, and all landslides within each area were mapped in detail using remote-sensing data. Included in the data release are five separate shapefiles: geographic areas representing the mapping extent of the two distinct areas (map areas, filename:... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Hurricane Maria, Landslides, Puerto Rico, USGS Science Data Catalog (SDC), All tags... debris flows, engineering geology, hurricane, landslide inventory, landslide mapping, none, remote sensing, Fewer tags