J. Sweeney
State University of New York at Geneseo
5 Papers
13 Citations
J. Sweeney is an academic researcher from State University of New York at Geneseo. The author has contributed to research in topics: Impact crater & Mars Exploration Program. The author has an hindex of 4, co-authored 5 publications.
Chat about Author
Papers
Selection of the InSight Landing Site
M. Golombek,D. Kipp,Nicholas H. Warner,Nicholas H. Warner,Ingrid Daubar,Robin L. Fergason,Randolph L. Kirk,Ross A. Beyer,Andres Huertas,Sylvain Piqueux,Nathaniel E. Putzig,Nathaniel E. Putzig,Bruce A. Campbell,Gareth A. Morgan,Constantinos Charalambous,William T. Pike,Klaus Gwinner,Fred Calef,David M. Kass,Michael A. Mischna,J. W. Ashley,C. Bloom,C. Bloom,C. Bloom,N. Wigton,N. Wigton,Trent M. Hare,C. Schwartz,Hallie Gengl,L. Redmond,L. Redmond,M. Trautman,M. Trautman,J. Sweeney,Cyril Grima,Isaac B. Smith,Isaac B. Smith,E. Sklyanskiy,M. Lisano,James N. Benardini,Sue Smrekar,Philippe Lognonné,William B. Banerdt +42 more
TL;DR: The InSight landing site selection took over four years from initial identification of possible areas that met engineering constraints, to downselection via targeted data from orbiters (especially Mars Reconnaissance Orbiter (MRO) Context Camera (CTX) and High-Resolution Imaging Science Experiment (HiRISE) images), to selection and certification via sophisticated entry, descent and landing (EDL) simulations.
Crater Degradation and Surface Erosion Rates at the InSight Landing Site, Western Elysium Planitia, Mars
J. Sweeney,N. H. Warner,M. P. Golombek,R. Kirk,R. L. Fergason,Anthony F. Pivarunas +5 more
- 01 Mar 2016
TL;DR: In this paper, the preservation and degradation timescales of (order of) 100m-scale impact craters were analyzed using high-resolution imagery and topographic data from the High Resolution Imaging Science Experiment (HiRISE) made available by the InSight landing site selection process.
9
Regolith Thickness Estimates from the Size Frequency Distribution of Rocky Ejecta Craters in Southwestern Elysium Planitia, Mars
N. H. Warner,M. P. Golombek,J. Sweeney,Anthony F. Pivarunas +3 more
- 01 Mar 2016
TL;DR: In this paper, the authors provided an analysis of regolith thickness at southwestern Elysium Planitia using the onset diameter of rocky ejecta craters (RECs) and accounting for local surface processes.
7
Near Surface Stratigraphy and Regolith Production in Southwestern Elysium Planitia, Mars: Implications for Hesperian-Amazonian Terrains and the InSight Lander Mission
TL;DR: In this article, an analysis of the size-frequency distribution (SFD) of 7988 rocky ejecta craters (RECs) across four candidate landing ellipses reveals that all craters >200 m in diameter and ≥ 30 m in age have boulder-sized rocks in their ejecta.
Improvements in B+ and BF2+ Beam Currents Through the Use of Diboron Tetrafluoride (B2F4) Gas
Ying Tang,Bryce Campbell,P. Davidson,R. S. Santiesteban,J. Sweeney,Robert Kaim,Oleg Byl,Yedave Sharad N,Edward E. Jones,Barry Lewis Chambers,Jim McManus +10 more
- 11 Jan 2011
TL;DR: In this article, Diboron Tetrafluoride (B2F4) is proposed as an alternative gaseous boron source material that can be a replacement for Boron Trifluorides (BF3), the standard material presently used on conventional ion implanters.