Joshua Cahill Print


  240-228-3048

  Joshua.Cahill@jhuapl.edu

: SES

:   Planetary Geologist; UV to TIR Spectroscopist; Synthetic Aperture and Sounding Radar Scientist

:  Planetary

  LRO, Mini-RF, LAMP, SSERVI, VORTICES

 
Degree Field of Study Year Attained Institution Name
Doctor of Philosophy Geology and Geophysics 2009 University of Hawaii Manoa
Master of Science Geology 2003 University of Tennessee
Bachelor of Science Science-Business 2000 University of Notre Dame

I have experience in the fields of lunar and terrestrial remote sensing.  My primary focus in lunar remote sensing is the application of radiative transfer modeling for analysis of visible/near-infrared spectra to determine crustal composition in the context of Apollo soils and samples.  I have also sustained involvement in terrestrial studies using a variety of airborne and portable field sensors for hyperspectral (visible, near, and thermal infrared) analyses of many targets.  More recent activities include participation on NASA’s Lunar Reconnaissance Orbiter (LRO) mission supporting the Mini-RF S-band radar and Lyman Alpha Mapping Project (LAMP) payloads including observation targeting, calibration, validation, and scientific analysis. My research for this mission has focused on characterization of the physical properties of lunar surface and subsurface geology. I'm also a Co-I supporting the NASA/APL SSERVI Node VORTICES, studying volatile detection and processes on a variety of airless bodies.

 
AGU Index Category AGU Index Sub-Category
PLANETARY SCIENCES: SOLID SURFACE PLANETS Remote sensing
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Moon
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Start Year End Year Description
2016 Current Co-Investigator supporting NASA’s Lunar Reconnaissance Orbiter (LRO) Mini-RF Instrument
2016 Current Co-Investigator supporting NASA’s Lunar Reconnaissance Orbiter (LRO) Lyman Alpha Mapping Project (LAMP)
2015 2016 Participating Scientist for the NASA’s Lunar Reconnaissance Orbiter (LRO) Lyman Alpha Mapping Project (LAMP)
2014 Current Co-Investigator supporting the NASA/APL Solar System Exploration Research Virtual Institute (SSERVI) Node: VOlatile Regolith Thermal Investigations Consortium for Exploration & Science (VORTICES)
2010 Current Science Team Member and Mission Operations Staff for NASA’s Lunar Reconnaissance Orbiter (LRO) Miniature Radio Frequency (Mini-RF) Instrument
2010 2014 NASA/APL Lunar Science Institute focusing on characterization of the lunar polar lighting environment
Year Description
2000 - Present American Geophysical Union
2015 - 2016 Geochemical Society
2013 NASA Achievement for supporting Lunar Reconnaissance Orbiter Science Team (Mini-RF)
2011 NASA Achievement for supporting Lunar Reconnaissance Orbiter Mission Operations (Mini-RF)
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The following publication information was downloaded from

ORCID logo https://orcid.org/

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Joshua T. S. Cahill, David T. Blewett, Nhan V. Nguyen, Alex Boosalis, Samuel J. Lawrence, Brett W. Denevi, (2019), optical constants of iron and nickel metal and an assessment of their relative influences on silicate mixture spectra from the FUV to the NIR, Icarus, 317, 229-241

Y. Liu, K. D. Retherford, T. K. Greathouse, U. Raut, K. E. Mandt, A. R. Hendrix, J. T. S. Cahill, G. R. Gladstone, C. Grava, A. F. Egan, D. E. Kaufmann, W. R. Pryor, (2018), The Far Ultraviolet Wavelength Dependence of the Lunar Phase Curve as Seen by LRO LAMP, Journal of Geophysical Research-Planets, 123, 2550-2563

J. T. Wilson, D. J. Lawrence, P. N. Peplowski, J. T. S. Cahill, V. R. Eke, R. J. Massey, L. F. A. Teodoro, (2018), Image Reconstruction Techniques in Neutron and Gamma Ray Spectroscopy: improving Lunar Prospector Data, Journal of Geophysical Research-Planets, 123, 1804-1822

Joshua L. Bandfield, Joshua T. S. Cahill, Lynn M. Carter, Catherine D. Neish, G. Wesley Patterson, Jean-Pierre Williams, David A. Paige, (2017), Distal ejecta from lunar impacts: Extensive regions of rocky deposits, Icarus, 283, 282-299

G. W. Patterson, A. M. Stickle, F. S. Turner, J. R. Jensen, D. B. J. Bussey, P. Spudis, R. C. Espiritu, R. C. Schulze, D. A. Yocky, D. E. Wahl, M. Zimmerman, J. T. S. Cahill, M. Nolan, L. Carter, C. D. Neish, R. K. Raney, B. J. Thomson, R. Kirk, T. W. Thompson, B. L. Tise, I. A. Erteza, C. V. Jakowatz, (2017), Bistatic radar observations of the Moon using Mini-RF on LRO and the Arecibo Observatory, Icarus, 283, 2-19

David Trang, Jeffrey J. Gillis-Davis, Myriam Lemelin, Joshua T. S. Cahill, B. Ray Hawke, Thomas A. Giguere, (2017), The compositional and physical properties of localized lunar pyroclastic deposits, Icarus, 283, 232-253

Deborah L. Domingue, Faith Vilas, Teck Choo, Karen R. Stockstill-Cahill, Joshua T. S. Cahill, Amanda R. Hendrix, (2016), Regional spectrophotometric properties of 951 Gaspra, Icarus, 280, 340-358

Benjamin T. Greenhagen, Catherine D. Neish, Jean-Pierre Williams, Joshua T. S. Cahill, Rebecca R. Ghent, Paul O. Hayne, Samuel J. Lawrence, Noah E. Petro, Joshua L. Bandfield, (2016), Origin of the anomalously rocky appearance of Tsiolkovskiy crater, Icarus, 273, 237-247

A. R. Hendrix, T. K. Greathouse, K. D. Retherford, K. E. Mandt, G. R. Gladstone, D. E. Kaufmann, D. M. Hurley, P. D. Feldman, W. R. Pryor, S. A. Stern, J. T. S. Cahill, (2016), Lunar swirls: Far-UV characteristics, Icarus, 273, 68-74

A. M. Stickle, G. W. Patterson, J. T. S. Cahill, D. B. J. Bussey, (2016), Mini-RF and LROC observations of mare crater layering relationships, Icarus, 273, 224-236

Joshua T. S. Cahill, Justin J. Hagerty, David J. Lawrence, Rachel L. Klima, David T. Blewett, (2014), Surveying the South Pole-Aitken basin magnetic anomaly for remnant impactor metallic iron, Icarus, 243, 27-30

Joshua T. S. Cahill, B. J. Thomson, G. Wesley Patterson, D. Benjamin J. Bussey, Catherine D. Neish, Norberto R. Lopez, F. Scott Turner, T. Aldridge, M. McAdam, H. M. Meyer, R. K. Raney, L. M. Carter, P. D. Spudis, H. Hiesinger, J. H. Pasckert, (2014), The Miniature Radio Frequency instrument's (Mini-RF) global observations of Earth's Moon, Icarus, 243, 173-190

Erica R. Jawin, Walter S. Kiefer, Caleb I. Fassett, D. Benjamin J. Bussey, Joshua T. S. Cahill, M. Darby Dyar, Samuel J. Lawrence, Paul D. Spudis, (2014), The relationship between radar scattering and surface roughness of lunar volcanic features, Journal of Geophysical Research-Planets, 119, 2331-2348

P. G. Lucey, G. A. Neumann, M. A. Riner, E. Mazarico, D. E. Smith, M. T. Zuber, D. A. Paige, D. B. Bussey, J. T. Cahill, A. McGovern, P. Isaacson, L. M. Corley, M. H. Torrence, H. J. Melosh, J. W. Head, E. Song, (2014), The global albedo of the Moon at 1064 nm from LOLA, Journal of Geophysical Research-Planets, 119, 1665-1679

C. D. Neish, J. Madden, L. M. Carter, B. R. Hawke, T. Giguere, V. J. Bray, G. R. Osinski, J. T. S. Cahill, (2014), Global distribution of lunar impact melt flows, Icarus, 239, 105-117

Karen R. Stockstill-Cahill, David T. Blewett, Joshua T. S. Cahill, Brett W. Denevi, Samuel J. Lawrence, Ecaterina I. Coman, (2014), Spectra of the Wells lunar glass simulants: New old data for reflectance modeling, Journal of Geophysical Research-Planets, 119, 925-940

R. Klima, J. Cahill, J. Hagerty, D. Lawrence, (2013), Remote detection of magmatic water in Bullialdus Crater on the Moon, Nature Geoscience, 6, 737-741

Samuel J. Lawrence, Julie D. Stopar, B. Ray Hawke, Benjamin T. Greenhagen, Joshua T. S. Cahill, Joshua L. Bandfield, Bradley L. Jolliff, Brett W. Denevi, Mark S. Robinson, Timothy D. Glotch, D. Benjamin J. Bussey, Paul D. Spudis, Thomas A. Giguere, W. Brent Garry, (2013), LRO observations of morphology and surface roughness of volcanic cones and lobate lava flows in the Marius Hills, Journal of Geophysical Research-Planets, 118, 615-634

J. Andrew McGovern, D. Benjamin Bussey, Benjamin T. Greenhagen, David A. Paige, Joshua T. S. Cahill, Paul D. Spudis, (2013), Mapping and characterization of non-polar permanent shadows on the lunar surface, Icarus, 223, 566-581

C. D. Neish, D. T. Blewett, J. K. Harmon, E. I. Coman, J. T. S. Cahill, C. M. Ernst, (2013), A comparison of rayed craters on the moon and mercury, Journal of Geophysical Research-Planets, 118, 2247-2261

P. D. Spudis, D. B. J. Bussey, S. M. Baloga, J. T. S. Cahill, L. S. Glaze, G. W. Patterson, R. K. Raney, T. W. Thompson, B. J. Thomson, E. A. Ustinov, (2013), Evidence for water ice on the moon: Results for anomalous polar craters from the LRO Mini-RF imaging radar, Journal of Geophysical Research-Planets, 118, 2016-2029

David Trang, Paul G. Lucey, Jeffrey J. Gillis-Davis, Joshua T. S. Cahill, Rachel L. Klima, Peter J. Isaacson, (2013), Near-infrared optical constants of naturally occurring olivine and synthetic pyroxene as a function of mineral composition, Journal of Geophysical Research-Planets, 118, 708-732

Samuel W. Bell, Bradley J. Thomson, M. Darby Dyar, Catherine D. Neish, Joshua T. S. Cahill, D. B. J. Bussey, (2012), Dating small fresh lunar craters with Mini-RF radar observations of ejecta blankets, Journal of Geophysical Research-Planets, 117

David T. Blewett, Joshua T. S. Cahill, Nhan V. Nguyen, Samuel J. Lawrence, Brett W. Denevi, Ecaterina I. Coman, (2012), Oxidation of iron metal and implications for laboratory and remotely sensed spectra of planetary materials, Meteoritics & Planetary Science, 47, A75-A75

D. B. J. Bussey, J. A. McGovern, B. T. Greenhagen, D. A. Paige, J. T. S. Cahill, M. Siegler, P. D. Spudis, (2012), Global catalogue of lunar permanently shadowed regions, Meteoritics & Planetary Science, 47, A90-A90

D. B. J. Bussey, R. Schulze, D. E. Wahl, M. Nolan, R. Jensen, G. W. Patterson, F. S. Turner, D. A. Yocky, J. T. S. Cahill, R. K. Raney, C. Neish, P. D. Spudis, C. V. Jakowatz, Mini-RF Team, (2012), Exploring for ice with bistatic radar observations of the Moon using the Arecibo Observatory and the Mini-RF Instrument on LRO, Meteoritics & Planetary Science, 47, A91-A91

Joshua T. S. Cahill, David T. Blewett, N. V. Nguyen, Kun Xu, Oleg A. Kirillov, Samuel J. Lawrence, Brett W. Denevi, Ecaterina I. Coman, (2012), Determination of iron metal optical constants: Implications for ultraviolet, visible, and near-infrared remote sensing of airless bodies, Geophysical Research Letters, 39

Lynn M. Carter, Catherine D. Neish, D. B. J. Bussey, Paul D. Spudis, G. Wesley Patterson, Joshua T. Cahill, R. Keith Raney, (2012), Initial observations of lunar impact melts and ejecta flows with the Mini-RF radar, Journal of Geophysical Research-Planets, 117

Diego De Rosa, Ben Bussey, Joshua T. Cahill, Tobias Lutz, Ian A. Crawford, Terence Hackwill, Stephan van Gasselt, Gerhard Neukum, Lars Witte, Andy McGovern, Peter M. Grindrod, James D. Carpenter, (2012), Characterisation of potential landing sites for the European Space Agency's Lunar Lander project, Planetary and Space Science, 74, 224-246

R. Keith Raney, Joshua T. S. Cahill, G. Wesley Patterson, D. Benjamin J. Bussey, (2012), The m-chi decomposition of hybrid dual-polarimetric radar data with application to lunar craters, Journal of Geophysical Research-Planets, 117

R. Keith Raney, Joshua T. S. Cahill, G. Wesley Patterson, D. Benjamin J. Bussey, IEEE, (2012), The m-chi decomposition of hybrid dual-polarimetric radar data, 2012 Ieee International Geoscience and Remote Sensing Symposium (Igarss), 5093-5096

B. J. Thomson, D. B. J. Bussey, C. D. Neish, J. T. S. Cahill, E. Heggy, R. L. Kirk, G. W. Patterson, R. K. Raney, P. D. Spudis, T. W. Thompson, E. A. Ustinov, (2012), An upper limit for ice in Shackleton crater as revealed by LRO Mini-RF orbital radar, Geophysical Research Letters, 39

J. T. S. Cahill, P. G. Lucey, K. R. Stockstill-Cahill, B. R. Hawke, (2010), Radiative transfer modeling of near-infrared reflectance of lunar highland and mare soils, Journal of Geophysical Research-Planets, 115

J. T. S. Cahill, P. G. Lucey, M. A. Wieczorek, (2009), Compositional variations of the lunar crust: Results from radiative transfer modeling of central peak spectra, Journal of Geophysical Research-Planets, 114

Samuel J. Lawrence, B. Ray Hawke, Jeffrey J. Gillis-Davis, G. Jeffrey Taylor, David J. Lawrence, Joshua T. Cahill, Justin J. Hagerty, Paul G. Lucey, Gregory A. Smith, Klaus Keil, (2008), Composition and origin of the Dewar geochemical anomaly, Journal of Geophysical Research-Planets, 113

J. T. Cahill, P. G. Lucey, (2007), Radiative transfer modeling of lunar highlands spectral classes and relationship to lunar samples, Journal of Geophysical Research-Planets, 112

JT Cahill, C Floss, M Anand, LA Taylor, MA Nazarov, BA Cohen, (2004), Petrogenesis of lunar highlands meteorites: Dhofar 025, Dhofar 081, Dar al Gani 262, and Dar al Gani 400, Meteoritics & Planetary Science, 39, 503-529

D Steutel, JT Cahill, PG Lucey, CA Nardell, JH Yee, JB Garvin, (2004), An exercise in traceability: Quantifying imaging spectrometer noise constraints on geologic interpretation, Instruments, Science, and Methods For Geospace and Planetary Remote Sensing, 5660, 181-190

JB Fein, DA Fowle, J Cahill, K Kemner, M Boyanov, B Bunker, (2002), Nonmetabolic reduction of Cr(VI) by bacterial surfaces under nutrient-absent conditions, Geomicrobiology Journal, 19, 369-382

LA Taylor, MA Nazarov, CK Shearer, HY McSween, J Cahill, CR Neal, MA Ivanova, LD Barsukova, RC Lentz, RN Clayton, TK Mayeda, (2002), Martian meteorite Dhofar 019: A new shergottite, Meteoritics & Planetary Science, 37, 1107-1128