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Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Hayward and Calaveras Faults 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...
Martian Frost Observations from Gullied Locations Derived from 2006-2015 HiRISE Images 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) 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.
Data release for "Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic" Data release for "Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic"
New detrital zircon and thin section point count data associated with Data release for 'Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic'. Found in Geosphere, v. 20, n. 5, p. 1286-1314.
Suspended-sediment concentration and grain size in the San Lorenzo River, coastal California 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...
Laboratory optical measurements in support of assessing PFAS enrichment in natural foams on surface waters within the Delaware River Basin 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...