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Physical volcanology data and measurements (grain size, grain shape, thickness, maximum clast size, ballistic block size, and componentry) from the May 11–27, 1924 tephra deposits of Halemaʻumaʻu crater, Kīlauea volcano, Island of Hawaiʻi Physical volcanology data and measurements (grain size, grain shape, thickness, maximum clast size, ballistic block size, and componentry) from the May 11–27, 1924 tephra deposits of Halemaʻumaʻu crater, Kīlauea volcano, Island of Hawaiʻi
Over 16 days from May 11–27, 1924, there were more than 50 explosions from Halemaʻumaʻu crater at Kīlauea volcano on the Island of Hawaiʻi. These explosions ejected blocks weighing >12,000 kg, as well as extremely fine ash to lapilli size tephra. The greatest thicknesses of tephra were at the summit region of Kīlauea, but some tephra fell on Wood Valley, Pāhala, and Waiʻōhinu to the...
Delineated watersheds and snapped locations for select streamgages in and near Wyoming Delineated watersheds and snapped locations for select streamgages in and near Wyoming
The U.S. Geological Survey (USGS), in cooperation with the Wyoming Water Development Office, delineated watersheds for 800 active and discontinued USGS streamgages in and near Wyoming. This data release includes shapefiles of streamgage location points and polygons of their delineated watersheds. Streamgage locations were snapped to the USGS High Resolution National Hydrography Dataset...
Soil data release of Open-File Report 02-277, collected on marine terraces near Santa Cruz, California in 1981 Soil data release of Open-File Report 02-277, collected on marine terraces near Santa Cruz, California in 1981
This data release represents samples collected in 1981 along a series of five marine terraces between Ano Nuevo and Santa Cruz in California as a part of a U.S. Geological Survey project led by Dennis Marchand to study soil chronosequences in the Western United States. These sequential surfaces of soils have similar key elements for development in the slope, climate, vegetation, and...
Sediment macrofaunal composition, stable isotopes, organic content, and grain size of the Cascadia margin (Pacific Ocean), June 2019 Sediment macrofaunal composition, stable isotopes, organic content, and grain size of the Cascadia margin (Pacific Ocean), June 2019
Dataset of sediment macrofaunal communities, geochemistry, and grain size associated with chemosynthetic and soft-sediment habitats along the Cascadia margin, Pacific Ocean, in 2019.
Kīpahulu Valley, Haleakalā National Park, Maui, Field and Lab-based eDNA Proof-of-concept Study for the Detection of Culex quinquefasciatus 2022-2025 Kīpahulu Valley, Haleakalā National Park, Maui, Field and Lab-based eDNA Proof-of-concept Study for the Detection of Culex quinquefasciatus 2022-2025
A leading contributor to the decline of Hawaiian forest birds is avian malaria caused by the protozoan parasite Plasmodium relictum and that is transmitted by the Southern House Mosquito (Culex quinquefasciatus). For conservation purposes, landscape-scale mosquito control techniques are being considered to disrupt the malaria disease cycle in key Hawaiian forest bird habitats. The...
Oscillatoriales Cover and Fire, Soil, and Topographical Characteristics of Post-Fire Natural Recovery Sites in the Great Basin, USA Oscillatoriales Cover and Fire, Soil, and Topographical Characteristics of Post-Fire Natural Recovery Sites in the Great Basin, USA
The frequency and extent of wildfire is increasing globally, necessitating an increased understanding of wildfire effects on ecosystem function. Although soil-stabilizing cyanobacteria can make up a substantial portion of the biotic community in semi-arid and arid rangelands, we currently have a limited understanding of the drivers behind their abundance following wildfire. These...