Geologist
Volcano Science Center
Email:
amosbrucker@usgs.gov
Office Phone:
360-993-8975
Fax:
360-993-8980
ORCID:
0000-0003-0298-0324
Supervisor:
Jon J Major
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The lateral blast, debris avalanche, pyroclastic flows, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. The debris avalanche and pyroclastic flows filled upper North Fork Toutle River valley and blocked the outlet of Spirit Lake. To mitigate the risk of a catastrophic breach, lake outflow was pumped over the blockage prior to rerouting through a 2.6-kilometer long tunnel completed in 1985 by the U.S. Army Corps of Engineers. However, periodic major repairs to the tunnel have caused responsible parties to reevaluate long-term lake outlet options. This dataset presents a time series of digital terrain models (DTM) of the Spirit Lake blockage...
Tags: Ecology,
Geography,
Geomorphology,
Geophysics,
Glaciology, All tags...
Hydrology,
Land Use Change,
Remote Sensing,
Sedimentology,
Soil Sciences,
USGS Science Data Catalog (SDC),
Volcanology,
Water Quality,
Water Resources, Fewer tags
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The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980-1986 and 2004-2008. During 2022, U.S. Army Corps of Engineers contracted the acquisitions of airborne lidar surveys of Mount St. Helens crater and two primary drainages–upper North Fork Toutle River and South Fork Toutle River with GeoTerra, Inc. The U.S. Geological Survey generated a terrain dataset from the classified point cloud with supplied breaklines and modified lake hydro-flattening, then exported a single digital elevation model (DEM) of the ground surface (that is, 'bare earth'),...
Tags: Climatology,
Ecology,
Forestry,
Geography,
Geomorphology, All tags...
Geophysics,
Glaciology,
Hydrology,
Land Use Change,
Remote Sensing,
Sedimentology,
Soil Sciences,
USGS Science Data Catalog (SDC),
Volcanology,
Water Quality,
Wildlife Biology, Fewer tags
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The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980-1986 and 2004-2008. Nearly four decades after the emplacement of the 1980 debris avalanche, high sediment production persists in the North Fork Toutle River basin, which drains the northern flank of the volcano. This high sediment production poses a risk of flooding to downstream communities along the Toutle and Cowlitz Rivers and of clogging the shipping channel of the Columbia River. Consequently, U.S. Army Corps of Engineers (USACE), under the direction of Congress, built a sediment...
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The 2018 eruption of Kīlauea Volcano on the Island of Hawaiʻi saw the collapse of a new, nested caldera at the volcano’s summit, and the inundation of 35.5 square kilometers (13.7 square miles) of the lower Puna District with lava. Between May and August, while the summit caldera collapsed, a lava channel extended 11 kilometers (7 miles) from fissure 8 in Leilani Estates to Kapoho Bay, where it formed an approximately 3.5-square-kilometer (1.4-square-mile) lava delta along the coastline. Rapidly-deployed remote sensing techniques were vital in monitoring these events. Following the eruption, the U.S. Geological Survey (USGS) contracted the acquisition of rigorous airborne lidar surveys of Kīlauea Volcano's summit,...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: ALS,
DEM,
East Rift Zone,
Geography,
Geomorphology, All tags...
Geophysics,
HI,
Hawaiʻi,
Hydrology,
Kapoho Bay,
Kīlauea Volcano,
Land Use Change,
Leilani Estates,
Marine Geology,
Puna District,
Puʻu ʻŌʻō,
Remote Sensing,
Sedimentology,
Seismology,
Soil Sciences,
Stratigraphy,
Structural Geology,
USA,
USGS Science Data Catalog (SDC),
Volcanology,
airborne laser scanning,
bare earth,
digital elevation model,
elevation,
elevation,
geomorphology,
geoscientificInformation,
hillshade,
lidar,
light detection and ranging,
near infrared,
shaded relief,
topography,
volcanic,
volcano, Fewer tags
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Two empirical simple linear regression models were developed from SedCam imagery and concurrent physical sediment samples over a 20-month period at the East Branch Brandywine Creek gage (USGS 01480870). The image files included here are a subset, used in the calibration dataset for these regression models. Models relate the explanatory variable, Rmax (maximum digital number of the red band, which peaks at a wavelength of 590 nanometers) to point and cross-sectional mean sample response variables (milligrams per liter). These regression models predict suspended-sediment concentration from a non-contact sediment surrogate technique to improve surface water monitoring operations. Files include Nikon Electronic Format...
Tags: Climatology,
DEM,
Delaware River,
East Branch Brandywine Creek,
Ecology, All tags...
Environmental Health,
Geography,
Geomorphology,
Hydrology,
Information Sciences,
Land Use Change,
PA,
Remote Sensing,
Sedimentology,
Soil Sciences,
USA,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
digital elevation model,
elevation data,
geomorphology,
hydrology,
inlandWaters,
photogrammetry,
sediment,
topography,
volcanic landforms,
volcano, Fewer tags
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