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LiDAR scans were taken using a tripod mounted Riegl VZ-400 scanning LiDAR. The tripod was set up such that the scanner was between 1.5 and 2.5 m tall. The VZ-400 is a near infrared (1550 nm) scanner. Geometric control was achieved using a pair of Trimble RB GPS antennae, one mounted on the LiDAR scanner (rover) and the other setup as a base station. Before taking a LiDAR scan, the VZ-400 would use the GPSs to fix a real time kinematic (RTK) solution for the scanner’s location and then use that position (scan position) as a reference for LiDAR returns. Post processing was done using RIScan-Pro version 2 (scanner specific software). Also, in post-processing, overlapping areas of point clouds were merged and inaccuracies...
As part of a NASA-funded study of sediment flux rates at a Mars analog site, we installed a suite of instruments in a small dune field near Grand Falls, Arizona. Data released in this report were collected from 10/28/2013 to 11/04/2016. The Grand Falls (GF) dune field is located on the Navajo Nation. It lies ~70 km NE of Flagstaff, AZ, 2 km east of Grand Falls, and just north of the Little Colorado River (LCR). The dune field consists of barchans, smaller dunes, ripples, and bare, indurated interdune surfaces; all features commonly found on the Martian surface. We measured sediment flux using a Sensit saltation sensor and a set of three Big Spring Number Eight (BSNE) passive sediment samplers, at 20, 50, and 100...
Categories: Data;
Tags: Geophysics,
Leupp,
Navajo Reservation,
Planetary Sciences,
USGS Science Data Catalog (SDC),
We processed 41 Voyager 2 images of Neptune’s moon Triton with pixel scales < 2 km/pixel form their raw, compressed, archived state to more usable cloud-optimized geotiffs, which can easily be used within spatial analysis software such as GIS. Processing was done using the USGS’ ISIS software and included geometric and radiometric calibration, and the removal of image reseaux and corner markers (originally used for geometric calibration). The images were also photogrammetrically controlled relative to one another to improve their locations on the surface, which were initially inaccurate by up to 200 km. After performing a least squares bundle adjustment, the root mean square (RMS) uncertainty in image locations...
Grand Falls dune field (GFDF) is located on the Navajo Nation, ~70 km NE of Flagstaff, AZ. This active dune field displays a range of morphologies, including barchans, smaller dunes, and ripples, and is bimodal in composition. The felsic component is likely derived from the Little Colorado River, and the mafic component (basaltic grains) is locally sourced from nearby cinder cones [1]. GFDF is an excellent analog site for both active dunes on Mars and other planetary bodies that have dune-like features (e.g., Venus and Titan). We have set up a meteorological station within the dune field that records temperature, barometric pressure, relative humidity, wind direction, wind speed, solar radiation, and precipitation...
Categories: Data;
Tags: Arizona,
Climatology,
Grand Falls,
Navajo Indian Reservation,
Planetary Sciences,
Dataset contains latitude, longitude and additional attribute information for mounds in the lowlands of Mars. This version of the database contains data for mounds in the southwestern Utopia Planitia region of the martian lowlands.
Categories: Data;
Tags: Geomorphology,
Mars,
Planetary Sciences,
USGS Science Data Catalog (SDC),
Utopia Planitia,
Data for Journal article: Relationship between explosive and effusive volcanism in the Montes Apenninus region of the Moon in JGR: Planets
Categories: Data;
Tags: Lunar,
Planetary,
Planetary Sciences,
Pyroclastic,
USGS Science Data Catalog (SDC),
Monthly report to show updates on personnel and conferences and scientific meetings. Includes unpublished works and works in progress.
We have set up a meteorological station at a small cinder field in Sunset Crater National Monument, Arizona, that records temperature, barometric pressure, relative humidity, wind direction, wind speed, solar radiation, and precipitation. Each hour, a BlazeVideo camera records a small portion of the cinder field adjacent to the meteorological station. Subsurface temperatures are recorded at cinder depths of 1, 6, 12, 24, and 48 cm. Data presented here span from March 09, 2021 to May 26, 2022.
This data release provides a wave model application and wave parameters derived from simulations of a schematized ancient lake on Mars. The phase-averaged wave model, SWAN, was applied within the Delft3D modeling system (Deltares, 2018) with reduced gravity and a range of atmospheric densities and wind speeds to simulate potential conditions that could generate wind waves on Mars. Wave modeling presented in this data release was combined with analysis of sedimentary structures observed in imagery collected by the Mars rover Curiosity to determine whether four examples of symmetrical, reversing, or straight-crested bedforms in Gale Crater sandstones are preserved wave ripples (Rubin and others, 2022). The presence...
Grand Falls dune field (GFDF) is located on the Navajo Nation, ~70 km NE of Flagstaff, AZ. This active dune field displays a range of morphologies, including barchans, smaller dunes, and ripples, and is bimodal in composition. The felsic component is likely derived from the Little Colorado River, and the mafic component (basaltic grains) is locally sourced from nearby cinder cones [1]. GFDF is an excellent analog site for both active dunes on Mars and other planetary bodies that have dune-like features (e.g., Venus and Titan). We have set up a meteorological station within the dune field that records temperature, barometric pressure, relative humidity, wind direction, wind speed, solar radiation, and precipitation....
Utilizing the USGS Meteor Crater Sample Collection, we sampled impact melt particles for geochemical and textural characterization using a scanning electron microscope and electron microprobe. Samples were collected from a range of different depths and distances from the crater rim, all within the proximal ejecta blanket. By using the Meteor Crater Sample Collection, in which all samples have known geospatial locations, we are able to quantify the spatial relationship and variability between mixing of melted target rocks and the Canyon Diablo meteorite. Presented here are high-resolution backscattered electron images of all analyzed impact melt particles, and geochemical data for glass and individual mineral phases...
The Terrestrial Analogs Data Portal (TADP; https://tadp.astrogeology.usgs.gov/) has been established as a repository and data discovery portal which leverages USGS ScienceBase, a trusted long-term digital repository that provides access to all USGS data services. Creation of the TADP service is in response to a number of NASA-generated reports identifying the need for a permanent planetary analog repository which adheres to standards-based archives. Presented here is the first version of the Planetary Aeolian Analog Database (PAAD) that will be incorporated into the TADP. This dataset is focused on dune field analogs, currently comprising 45 sites from all over the world and includes a set of "core" attributes (that...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service,
Shapefile;
Tags: Antarctica,
Argentina,
Australia,
China,
Dune field,
This data release is a companion to Dundas et al., 2020. Additional description of the methods and rationale for data collection is provided there. The primary data are from several categories of data-logging sensors described in detail below. Sixteen images are also included as part of this data release. These document the sensor locations as described in Dundas et al. (2020).
Categories: Data;
Tags: Holuhraun,
Iceland,
Planetary Sciences,
Terrestrial Analog,
USGS Science Data Catalog (SDC),
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