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Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Hayward and Calaveras Faults
The occurrence and impact of the February 2023 earthquake doublet in Türkiye, where an Mw 7.8 event was followed roughly 9 hours later by an Mw 7.5 event on an adjacent fault, begs the question: What would be the impact of such a sequence in California? As part of the effort to address this question, this Data Release consists of simulated ground motions for a hypothetical doublet scenario on the
Martian Frost Observations from Gullied Locations Derived from 2006-2015 HiRISE Images
These data describe observations of frost and related features in alcoves and slopes near Martian gully landforms. The base data are images from the High Resolution Imaging Science Experiment (HiRISE) acquired prior to Ls=0 of Mars Year 33 (June 18, 2015).
Surface Elevation Table (SET) data from the Blackwater National Wildlife Refuge (2010-2013)
Here we provide data used to report on changes in tidal marsh elevation at the Blackwater National Wildlife Refuge (NWR), located in Dorchester, Maryland, USA. This dataset includes Surface Elevation Table (SET) measurements taken from 40 SET platforms distributed across the refuge. At each platform location annual measurements of wetland surface elevation were made from 20010-2013.
Suspended-sediment concentration and grain size in the San Lorenzo River, coastal California
Water samples were collected from the San Lorenzo River, Santa Cruz, California, and analyzed for suspended-sediment concentration and sand break (proportion of sand vs. silt-plus-clay) at the U.S. Geological Survey (USGS) laboratory in Santa Cruz, California. The samples were all single-vertical samples collected from the thalweg of the river, using a D-95 sampler deployed from a bridge box at a
Laboratory optical measurements in support of assessing PFAS enrichment in natural foams on surface waters within the Delaware River Basin
One phenomenon that has been shown to concentrate and release per- and polyfluoroalkyl substances (PFAS) in surface water is the formation of natural foams. For surface water foams to form, surface active compounds or surfactants must be present in the water along with a source of gas bubbles. Some examples of surface-active compounds include humic and fulvic acids, colloidal particles, and lipids
Fluvial-aeolian sediment availability models: Colorado River, Grand Canyon
These data were compiled to model the area of exposed, bare sand along 168 km of the Colorado River between Glen Canyon Dam and Bright Angel Creek, Arizona. Objective(s) of our study were to develop and validate four models of exposed sand area for the study reach, respectively based on 1) single-day maxiumum river discharge, 2) multiple-day river discharge patterning, 3) field-observed wind veloc
Topographic and Bank Erosion Pin Data Used in Monitoring of Bank Erosion in Caulks Creek, Wildwood, Missouri, 2022–2023
Topographic data were collected along six reaches (study reach 1, study reach 2, study reach 3, study reach 4, study reach 5, and study reach 6) along Caulks Creek in Wildwood, Missouri, on multiple dates, using terrestrial light detection and ranging (t-lidar), Global Navigation Satellite System (GNSS), and conventional surveying techniques (Rydlund and Densmore, 2012).These data are high-resolut
Digital Surface Models and orthomosaic images from UAS surveys of Jenkinson Lake, El Dorado County, CA
This data release presents Digital Surface Models (DSM) and orthomosaic images derived from uncrewed aerial system (UAS) surveys conducted at Jenkinson Lake in El Dorado County, California. The surveys were conducted to perform repeat structure-from-motion topographic mapping at the upper end of the reservoir, near the inlets of Sly Park Creek and Hazel Creek, with the purpose of measuring sedimen
2015 Sonora Mud Turtles
Montezuma Well is an unusual fishless desert wetland in central Arizona. Water in the Well is naturally enriched with >100 g/L dissolved geogenic arsenic (As) and supports a relatively simple aquatic desert food web with several endemic invertebrate species. Previous studies of As among various environmental compartments and organisms in Montezuma Well have not included turtles despite their poten
Data Release for Replicate amphibian swab and standard dilution of artificial DNA data to assess qPCR and sampling detection error for Batrachochytrium dendrobatidis.
We generated a data set from by collecting duplicate swabs from all amphibian individuals sampled at 5 sites (96 individuals) and analyzed these duplicate swabs running 3 subsamples of the extracted DNA in separate qPCR reactions. The resulting data set included 2 swabs per individual with 1 qPCR result and a 2nd swab with 3 qPCR results for detection of Batrachochytrium dendrobatidis (Bd) DNA. We
Sea-level rise and high tide flooding inundation probability and depth statistics at Big Cypress National Preserve, Florida
This dataset includes elevation-based probability and depth statistics for estimating inundation under various sea-level rise and high tide flooding scenarios in and around the National Park Service’s Big Cypress National Preserve. For information on the digital elevation model (DEM) source used to develop these datasets refer to the corresponding spatial metadata file (Danielson and others, 2023)
Plankton biodiversity estimates from the Pliocene of North Atlantic DSDP Sites 552 and 606
Biodiversity metrics for Pliocene time series at DSDP Sites 552A and 606. Includes sample designation, depth in core, age, February, August, and mean annual sea surface temperature. Includes species richness