Digitizing the Ronald Greeley Slide Collection David A

Digitizing the Ronald Greeley Slide Collection David A. Williams and David M. Nelson School of Earth & Space Exploration, Arizona State University, Tempe, Arizona. For more information, email: [email protected] Summary Examples of the Greeley Slide Collection • ASU Regent’s Professor Ronald Greeley (1939-2011) studied ter- restrial volcanic and aeolian features as analogs to those discover- ed on the Moon, Mars, Venus, and Io from the early NASA missions • Between the late 1960s to the early 2000s, he compiled a collection of ~14,435 35mm slides of Earth’s geologic features, as well as of images of planetary surfaces from early missions and a variety of mission results • We received a grant from the NASA Planetary Data Archiving, Res- toration, and Tools (PDART) program for one year, to digitize this slide collection, develop PDS4 labels, and place them online for wider community access and use • The first four slide sets have been digitized, and are on line at: Laboratory Experiments: http://rpif.asu.edu/greeley_slide_collection/ Above: Photographic montages of impact cra- tering experiments into water-saturated materi- Examples of the Greeley Slide Collection als. These early experiments were attempts to understand formation of what are now called Laboratory Experiments: pedestal craters and fluidized ejecta blankets on Above: Polyethylene Glycol (PEG) wax used to simulate a Mars. From 1981. viscous lava filling a large lunar impact basin model, 1980. Below, Left & Right: Montage of experiment photos testing variations in effusion rate and topography on wax flow. From Greeley and Womer, Proc. LPSC 12B, 1981. Aerial Photographs: Procedure Above, Left: Aratus Crater, CA 1975: Lunar rille analog. • Digitize the 14,435 slides of the Greeley Collection, sheet by sheet, by DigMyPics.com (Gilbert, AZ). Above, Right: King’s Bowl, ID 1968: Lunar mare analog. • Each slide is cleaned, digitized at 4000 dpi as TIFFs, with manual color and exposure correction (if needed). Total cost to digitize the collection is ~$9,300. Images delivered on a 1 terrabyte hard drive. • Co-I David Nelson will create PDS4 labels for each slide, including any info written on each slide. • Slides will be delivered in groups related by topic/location to the PDS Geosciences Node who will oversee peer review. • After peer review, and corrections if required, images posted on website of the Ronald Greeley Center for Planetary Studies, the NASA Regional Planetary Image Facility at ASU. • The RGCPS acts as a remote hub for the PDS Geosciences Node, acting as a site for other collections: E.g., Mars Analog Field Site, Amboy Crater (CA) collection: https://rpif.asu.edu/fieldimgs_amboy_crater/ Aerial Photographs: Above, Left: Amboy dunes, CA 1976: Martian analog. Proof-of-Concept Slide Sets Online Above, Right: Pt. Barrow, AK 2003: Europa analog. • We digitized several rare slide sets at request of the NASA History Office, and we have already placed them on line (without PDS labels) as indica- ted: 1) Pioneer 11 at Saturn (LPI slide set, circa 1980): https://rpif.asu.edu/slides_pioneer11/ 2) Future Planetary Mission Concepts, artwork (various),1977-2003: https://rpif.asu.edu/slides_mission_concepts/ 3) Soviet Venera 15-16 orbiter images of Venus (circa 1983): Old Mission Results: https://rpif.asu.edu/slides_venera15-16/ Field Photographs: Above: Ti content & model ages for lunar maria, Galileo Above, Left: Sulfur flow, Mauna Loa, HI 1983: Io analog. 4) NASA JPL Marsokhod rover tests at Kilauea volcano, Hawaii (1995): Earth-Moon Flyby 1, Dec. 1990. Above, Right: Industrial sulfur flow, TX 1986: Io analog. https://rpif.asu.edu/slides_marsokhod/ .

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AEOLIAN GEOLOGY of the MARS PATHFINDER SITE. Ronald
AEOLIAN GEOLOGY OF THE MARS PATHFINDER SITE. Ronald Greeley, Michael Kraft, Gregory Wilson (Arizona State University); Robert Sullivan (Cornell University); Ruslan Kuzmin (Vernadsky Institute, Russian Academy of Sciences); Michael Malin (Malin Space Science Systems); Nathan Bridges, Kenneth Herkenhoff, Matthew Golombek (Jet Propulsion Laboratory); Peter Smith (University of Arizona). Introduction wind tails, 2) drift deposits, 3) ripplelike deposits, duneforms of several types, and 4) material on the The Mars Pathfinder landing site contains abun- tops of some rocks and spacecraft components, dant features attributed to aeolian, or wind, proc- presumably settled from atmospheric suspension. esses. These include wind tails, drift deposits, duneforms of various types, ripplelike features, Wind-tails are found in association with many and ventifacts (the first seen on Mars). Many of rocks. Typically they taper to a point away from these features are consistent with formation in- the rock in the inferred downwind direction (at volving sand-size particles. Although some fea- the time of their formation). They range in length tures, such as the barchan dunes, could develop from a cm to nearly a meter and are bright red. from saltating sand-size aggregates of finer Drift deposits are also bright red, but occur as grains, the discovery of ventifact flutes cut in patches, only some of which are associated with rocks strongly suggests that at least some of the rocks. Wind- tails and drift deposits have a grains are crystalline, rather than aggregates. Ex- sculpted appearance and are similar to those seen cluding the ventifacts, the orientations of the at the Viking lander sites (3). wind-related features correlate well with the ori- entations of bright wind streaks seen on Viking Dunelike structures occur as transverse, bar- Orbiter images in the general area.
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