MAPPING PLUTO SURFACE AGE BY IMPACT CRATER ANALYSIS

ANDREW SCHMIDT

GIST 332 INTRO TO GIS

12/1/19

MAP 1

PREPARATION

ACQUISITION

PROJECTION

MAP 2

EDITING

CALCULATION

SELECTION

ANALYSIS

y = Ax-B:

x = diameter (km)

y = number of craters counted

N = bins (Incremental: sums for multiples of ten, Cumulative: sums of all craters > bin diameter)

b = B = (N*sum(ln(x)*ln(y)))-(sum(ln(x))*sum(ln(y)))/(N*(ln(x)2)-(sum(ln(x))2))

a = (sum(ln(y))-(b*sum(ln(x))))/N

A = ea

Least-Squares Regression:

y-intercept = A

slope = -B

MAP 3

RELATIVE AGES

ABSOLUTE AGES

DISCUSSION

MAP 4

NEW PROJECTION

CONFIRMATION

CONCLUSION

SOURCES:

1 LISSAUER, JACK J. AND IMKE DE PATER, “FUNDAMENTAL PLANETARY SCIENCE (PHYSICS CHEMISTRY AND HABITABILITY),” CAMBRIDGE UNIVERSITY PRESS, 2012.

2 MOORE, J. ET AL, “GEOLOGICAL MAPPING OF PLUTO AND CHARON USING NEW HORIZONS DATA,” ISPRS - INTERNATIONAL ARCHIVES OF THE PHOTOGRAMMETRY, REMOTE SENSING AND SPATIAL INFORMATION SCIENCES, 2016. XLI-B4. 449-451. 10.5194/ISPRS-ARCHIVES-XLI-B4-449-2016.

3 MOORE, J. ET AL, “THE GEOLOGY OF PLUTO AND CHARON THROUGH THE EYES OF NEW HORIZONS,” SCIENCE, 2016 MAR 18, 351(6279):1284-93.

4 MOORE, J. ET AL, “SUPPLEMENTARY MATERIALS FOR ‘THE GEOLOGY OF PLUTO AND CHARON THROUGH THE EYES OF NEW HORIZONS,’ ” SCIENCE, 2016 MAR 18, 351(6279):1284-93.

5 PRICE, MARIBETH H., “MASTERING ARCGIS,” EIGHTH EDITION, MCGRAW HILL, 2014.

6 SCHMIDT, ANDREW, “ANALYZING OBSERVED CRATER SIZES,” ASTR 3750 PROJECT, UNIVERSITY OF COLORADO BOULDER, 2016.

7 SINGER, K.N. ET AL, “IMPACT CRATERS ON PLUTO AND CHARON INDICATE A DEFICIT OF SMALL KUIPER BELT OBJECTS [ABSTRACT],” SCIENCE, 01 MAR 2019: VOL. 363, ISSUE 6430, PP. 955-959.

8 WHITE, O. L. ET AL, “A FORTHCOMING GLOBAL GEOLOGIC MAP OF PLUTO,” 2019 PLANETARY GEOLOGIC MAPPERS 2019 (LPI CONTRIB. NO. 2154). SETI INSTITUTE, NASA AMES RE-SEARCH CENTER, SOUTHWEST RESEARCH INSTITUTE, ARIZONA STATE UNIVERSITY, NASA JET PROPULSION LABORATORY.