Todd M Hoefen

34 items:

LaserProfiler Corescan© Hyperspectral Core Imager Mark III (HCI-III) system data were acquired for hand samples, and subsequent billets made from the hand samples, collected during the U.S. Geological Survey (USGS) 2014, 2015, and 2016 field seasons in the Nabesna area of the eastern Alaska Range. This area contains exposed porphyry deposits and hand samples were collected throughout the region in support of the HyMap imaging spectrometer survey (https://doi.org/10.5066/F7DN435W) (Kokaly and others, 2017a). The HCI-III system consists of three different components. The first is an imaging spectrometer which collects reflectance data with a spatial resolution of approximately 500 nanometers (nm) for 514 spectral channels covering... Tags: Alaska, Alaska, Alaska Range, Bond Creek, Canada, All tags...
4. Laboratory ASD spectra of field samples Reflectance data were collected using Malvern Panalytical ASD FieldSpec® 4 Hi-Res NG Spectroradiometers with custom VNIR gratings (hereafter referred to as ASD spectrometers) on August 21, 2022, at a field site on Black Rock Desert, Nevada, USA. A full description of all collection and processing steps is included in this data release as ‘BlackRockDesertNV_21aug2022_ProcessingSteps.pdf’. These data are useful for comparison with imaging spectrometer data collected from aircraft, e.g., AVIRIS-Classic (Vane and others, 1993), and from space, e.g., EMIT (Thompson and others, 2023; Green and others, 2021) and EnMAP (Storch and others, 2023). Because the field data have fine spectral resolution and were collected over... Tags: Black Rock Desert, Earth Mapping Resources Initiative, EarthMRI, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags...
3. Averaged ASD field spectra Reflectance data were collected using Malvern Panalytical ASD FieldSpec® 4 Hi-Res NG Spectroradiometers with custom VNIR gratings (hereafter referred to as ASD spectrometers) on August 21, 2022, at a field site on Black Rock Desert, Nevada, USA. A full description of all collection and processing steps is included in this data release as ‘BlackRockDesertNV_21aug2022_ProcessingSteps.pdf’. These data are useful for comparison with imaging spectrometer data collected from aircraft, e.g., AVIRIS-Classic (Vane and others, 1993), and from space, e.g., EMIT (Thompson and others, 2023; Green and others, 2021) and EnMAP (Storch and others, 2023). Because the field data have fine spectral resolution and were collected over... Tags: Black Rock Desert, Earth Mapping Resources Initiative, EarthMRI, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags...
HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpecⓇ NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017 HySpex by NEO (HySpex) VNIR-1800 and SWIR-384 imaging spectrometer radiance data were acquired on September 14, 2017 at the Cresson Pit of the Cripple Creek & Victor mine in Cripple Creek, Colorado. ASD FieldSpecⓇ NG data were collected on September 13 and 14, 2017 at two calibration sites within the Cresson Pit imaged with the HySpex imaging spectrometers. The HySpex VNIR-1800 imaging spectrometer is a push broom type instrument that utilizes 1800 pixels to collect 186 channels of spectral data in the region of 400 to 1000 nanometers (nm). The spectral sampling interval of the HySpex VNIR-1800 is 3.26 nm with a 17° field of view (Norsk Elektro Optikk AS, 2016b). The HySpex SWIR-384 imagining spectrometer is a push... Categories: Data; Tags: Big Bull Mountain, Colorado, Cripple Creek, Cripple Creek District Mine, Cripple Creek North, All tags...
8. Standard operating procedures Reflectance data were collected using Malvern Panalytical ASD FieldSpec® 4 Hi-Res NG Spectroradiometers with custom VNIR gratings (hereafter referred to as ASD spectrometers) on August 21, 2022, at a field site on Black Rock Desert, Nevada, USA. A full description of all collection and processing steps is included in this data release as ‘BlackRockDesertNV_21aug2022_ProcessingSteps.pdf’. These data are useful for comparison with imaging spectrometer data collected from aircraft, e.g., AVIRIS-Classic (Vane and others, 1993), and from space, e.g., EMIT (Thompson and others, 2023; Green and others, 2021) and EnMAP (Storch and others, 2023). Because the field data have fine spectral resolution and were collected over... Tags: Black Rock Desert, Earth Mapping Resources Initiative, EarthMRI, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags...

ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact sciencebase@usgs.gov.