Supporting Data for: Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s geochemical evolution (doi:10.48349/ASU/IDEZ4P)

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Part 1: Document Description
Part 2: Study Description
Part 3: Data Files Description
Part 4: Variable Description
Part 5: Other Study-Related Materials
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Supporting Data for: Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s geochemical evolution

doi:10.48349/ASU/IDEZ4P

ASU Library Research Data Repository

2023-06-05

1

Nittler, Larry, 2023, "Supporting Data for: Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s geochemical evolution", https://doi.org/10.48349/ASU/IDEZ4P, ASU Library Research Data Repository, V1, UNF:6:Gq3gZHe9O7sK4HKl0BMpBA== [fileUNF]

Supporting Data for: Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s geochemical evolution

doi:10.48349/ASU/IDEZ4P

Nittler, Larry (Arizona State University)

School of Earth and Space Exploration

ASU Library Research Data Repository

Nittler, Larry

Nittler, Larry

2023-04-13

https://doi.org/10.48349/ASU/IDEZ4P

Astronomy and Astrophysics, Mercury (Planet), MESSENGER mission, Chromium, Spectrum analysis

Planetary Science, Geochemistry, Outer space--Exploration

<p>Research data supporting Chromium on Mercury project and the paper "Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s Geochemical evolution," in the Journal of Geophysical Research.</p> <p>The primary underlying data is archived by <a href="https://pds.nasa.gov">NASA Planetary Data System (PDS)</a>. This subset includes additional data (one spreadsheet and eighteen images) not archived by NASA. </p> <p>The spreadsheet contains the fitting results for 133 MESSENGER XRS flare spectra reported in Nittler et al. (Chromium on Mercury: New results from the MESSENGER X-Ray Spectrometer and implications for the innermost planet’s geochemical evolution). </p> <p>As discussed in the paper, the Cr/Si and Fe/Si ratios are corrected for the phase angle effect. Both corrected, and uncorrected data are provided for Cr/Si. Error bars are one-sigma. Errors are statistical, and systematic error bars may be larger. MXRS data are available from the NASA PDS</a>.</p> <p>Dataset contains 18 images, 1 spreadsheet - 'crflaredata.csv,' and 1 README documentation file providing the methodology and variable information. Approximately 3 megabytes.</p>

2011-09-08-2015-04-29

Spectrometer

L. R. Nittler et al. “The major-element composition of Mercury's surface from MESSENGER X-ray spectrometry,” Science, vol. 333, pp 1847-1850, 2011, DOI: 10.1126/science.1211567 (https://doi.org/10.1126/science.1211567); S. Z. Weider et al., "Evidence for geochemical terranes on Mercury: Global mapping of major elements with MESSENGER’s X-Ray Spectrometer," Earth and Planetary Science Letters, Vol. 416, 109-120, 2015, doi: 10.1016/j.epsl.2015.01.023 (https://doi.org/10.1016/j.epsl.2015.01.023)

L. R. Nittler et al., “Global major-element maps of Mercury from four years of MESSENGER X-Ray Spectrometer observations,” Icarus, vol. 345, p. 113716, Jul. 2020, doi: 10.1016/j.icarus.2020.113716. (https://doi.org/10.1016/j.icarus.2020.113716)

L. R. Nittler et al., “Chromium on Mercury: New Results From the MESSENGER X-Ray Spectrometer and Implications for the Innermost Planet’s Geochemical Evolution,” Journal of Geophysical Research: Planets, vol. 128, no. 7, p. e2022JE007691, 2023,

10.1029/2022JE007691

L. R. Nittler et al., “Chromium on Mercury: New Results From the MESSENGER X-Ray Spectrometer and Implications for the Innermost Planet’s Geochemical Evolution,” Journal of Geophysical Research: Planets, vol. 128, no. 7, p. e2022JE007691, 2023,

• Number of cases: 133

• No. of variables per record: 30

• Type of File: text/tab-separated-values

UNF:6:Gq3gZHe9O7sK4HKl0BMpBA==

• Flare - Flare
• STARTMET - STARTMET
• ENDMET - ENDMET
• START UTC - START UTC
• END UTC - END UTC
• PPLOTINCLUDE - PPLOTINCLUDE
• Area (km2) - Area (km2)
• FPASPECT - FPASPECT
• Latitude - Latitude
• Longitude - Longitude
• Incidence angle (deg) - Incidence angle (deg)
• Emission angle (deg) - Emission angle (deg)
• Phase angle (deg) - Phase angle (deg)
• Solar temp (MK) - Solar temp (MK)
• Mg/Si - Mg/Si
• er Mg/Si - er Mg/Si
• Al/Si - Al/Si
• er Al/Si - er Al/Si
• S/Si - S/Si
• er S/Si - er S/Si
• Ca/Si - Ca/Si
• er Ca/Si - er Ca/Si
• Ti/Si - Ti/Si
• er Ti/Si - er Ti/Si
• Cr/Si (not phase corrected) - Cr/Si (not phase corrected)
• er Cr/Si (not phase corrected) - er Cr/Si (not phase corrected)
• Cr/Si (phase corrected) - Cr/Si (phase corrected)
• er Cr/Si (pahse corrected) - er Cr/Si (pahse corrected)
• Fe/Si - Fe/Si
• er Fe/Si - er Fe/Si

f32520 Location:

Summary Statistics: Max. 133.0; Min. 1.0; Mean 67.0; Valid 133.0; StDev 38.537860172389784

Variable Format: numeric

Notes: UNF:6:121clzoiQeTvc0u2O9TXaA==

f32520 Location:

Summary Statistics: Max. 3.38755132E8; StDev 2.978178987279436E7; Mean 3.104219883909775E8; Valid 133.0; Min. 2.24005937E8

Variable Format: numeric

Notes: UNF:6:1p5wKxEtI2mK2H+f/rMoWQ==

f32520 Location:

Summary Statistics: StDev 2.9782204495717853E7; Valid 133.0; Max. 3.38755312E8; Min. 2.24010537E8; Mean 3.1042289312030077E8

Variable Format: numeric

Notes: UNF:6:2Rf9Ow2vqRiJgijHjht9zQ==

f32520 Location:

Variable Format: character

Notes: UNF:6:zTgf05cvIhnTdtNx/OWRXQ==

f32520 Location:

Variable Format: character

Notes: UNF:6:/qhSxEKaLGsRTp8gRCdIjw==

f32520 Location:

Summary Statistics: Min. 0.0; StDev 0.44471018105679333; Valid 133.0; Mean 0.21052631578947384; Max. 2.0

Variable Format: numeric

Notes: UNF:6:3sAdlVOtSNeCQhmJUL2cBw==

f32520 Location:

Summary Statistics: StDev 1444434.16073644; Mean 1015730.4360902252; Min. 2296.0; Valid 133.0; Max. 6618985.0

Variable Format: numeric

Notes: UNF:6:cmR4evMXWerd7Q3KvSuO5A==

f32520 Location:

Summary Statistics: Max. 4.433584; Valid 133.0; Mean 1.2244135015037594; Min. 0.4413962; StDev 0.5384670562682496;

Variable Format: numeric

Notes: UNF:6:5dk3JiS1oZFhZ3inDMvckg==

f32520 Location:

Summary Statistics: Min. -68.43086; Mean 11.812813313533837; Valid 133.0; Max. 84.49236; StDev 39.48465820050603

Variable Format: numeric

Notes: UNF:6:XsooQTE3j8DCKbE3tWwCWw==

f32520 Location:

Summary Statistics: Valid 133.0; StDev 112.04798496561202; Max. 179.6382; Mean 40.41713038270677; Min. -179.8934;

Variable Format: numeric

Notes: UNF:6:i29uzGwgc9CfFXDNXnkh7Q==

f32520 Location:

Summary Statistics: Mean 57.11790977443609; Valid 133.0; StDev 19.222450831801858; Max. 88.035; Min. 11.034;

Variable Format: numeric

Notes: UNF:6:Y7GrAVq6C6RcdeBeFetAzw==

f32520 Location:

Summary Statistics: StDev 22.750648948187447; Min. 4.00084; Valid 133.0; Mean 40.04246909774436; Max. 73.9179

Variable Format: numeric

Notes: UNF:6:+gD9EVpASdZYtvo01dweyQ==

f32520 Location:

Summary Statistics: Valid 133.0; Max. 104.387; StDev 8.68561257111031; Mean 89.09893909774436; Min. 75.0524;

Variable Format: numeric

Notes: UNF:6:Bq3QrH3Od8ybWLhhpFK0Hg==

f32520 Location:

Summary Statistics: Valid 133.0; StDev 3.202223979396708; Max. 28.4862; Min. 11.78579; Mean 18.998416842105264

Variable Format: numeric

Notes: UNF:6:wuV+/vu1ukwKjyhEN9wj/A==

f32520 Location:

Summary Statistics: Mean 0.46684336917293234; StDev 0.14499052457245326; Max. 0.9312598; Min. 0.1999799; Valid 133.0

Variable Format: numeric

Notes: UNF:6:W3dlY1EX0iILQO9p3DCvTQ==

f32520 Location:

Summary Statistics: Max. 0.04222623; Min. 0.004419044; Mean 0.016949008060150376; StDev 0.009924218465833273; Valid 133.0;

Variable Format: numeric

Notes: UNF:6:u+Q2oz0lN6mLy+3GQsTgBg==

f32520 Location:

Summary Statistics: Max. 0.3479363; Min. 0.07859834; Mean 0.23049618533834587; StDev 0.04961542893245271; Valid 133.0

Variable Format: numeric

Notes: UNF:6:m4HgY9AlvgIIZHr/mAIoTA==

f32520 Location:

Summary Statistics: StDev 0.011704005258087196; Mean 0.017094339060150374; Max. 0.05306354; Min. 0.004554266; Valid 133.0;

Variable Format: numeric

Notes: UNF:6:1VmdzaPEfqNcKSSwfoVwNA==

f32520 Location:

Summary Statistics: Min. 0.02134709; Valid 133.0; Mean 0.08237575157894737; StDev 0.022861328972409136; Max. 0.152246

Variable Format: numeric

Notes: UNF:6:O13fPyomk3UYc42Sb1Prww==

f32520 Location:

Summary Statistics: StDev 0.002634326678036131; Mean 0.0049498113383458645; Min. 0.0; Valid 133.0; Max. 0.01033916

Variable Format: numeric

Notes: UNF:6:S8TzebAv9SL9fYd/DAVVsQ==

f32520 Location:

Summary Statistics: Valid 133.0; Max. 0.3069713; Mean 0.1886226203007519; Min. 0.1019202; StDev 0.045099458562255494

Variable Format: numeric

Notes: UNF:6:SOPElriXHN0H21PO6D0zkA==

f32520 Location:

Summary Statistics: Min. 0.0; Valid 133.0; StDev 0.0027261743477005984; Max. 0.01360734; Mean 0.00507729754887218;

Variable Format: numeric

Notes: UNF:6:hr9AWqc6nr+x8cG/efUIiQ==

f32520 Location:

Summary Statistics: StDev 0.004151289919211588; Min. 0.0; Max. 0.02129948; Valid 132.0; Mean 0.008708332037878788;

Variable Format: numeric

Notes: UNF:6:khPC2+/NbjqM0THVdTlMfw==

f32520 Location:

Summary Statistics: Max. 0.005556247; Min. 0.0; Valid 130.0; StDev 0.0012255101532922814; Mean 0.002321205330769231

Variable Format: numeric

Notes: UNF:6:6cISkI/VkxX3CUvJLUvtgg==

f32520 Location:

Summary Statistics: Mean 0.004357733864661654; Min. 4.35189E-4; Valid 133.0; Max. 0.024180137; StDev 0.0036730203868515503

Variable Format: numeric

Notes: UNF:6:Vnd5Fb4Hb7WtTS7V7Bv4cw==

f32520 Location:

Summary Statistics: Valid 133.0; Max. 0.009481936; Min. 2.30211E-4; StDev 0.0014948769318265695; Mean 0.0020902667218045115

Variable Format: numeric

Notes: UNF:6:/wPvHe6njVq67UwiUlDpew==

f32520 Location:

Summary Statistics: Mean 9.01055030075188E-4; StDev 6.077232941358529E-4; Max. 0.003196275; Min. 9.97E-5; Valid 133.0

Variable Format: numeric

Notes: UNF:6:HJtDgcV6S8qvY0cSMICBgg==

f32520 Location:

Summary Statistics: Max. 0.001764937; Mean 4.545125714285714E-4; Valid 133.0; StDev 2.963047099794473E-4; Min. 1.32176E-4;

Variable Format: numeric

Notes: UNF:6:/g2M8A63ZO2UG8KZXDHvzA==

f32520 Location:

Summary Statistics: Valid 133.0; Max. 0.1177366; Min. 0.01955818; StDev 0.02249953485502088; Mean 0.05621654744360902

Variable Format: numeric

Notes: UNF:6:yvY9cL5Q2d1hTlJv1URSYA==

f32520 Location:

Summary Statistics: StDev 0.004251040445105545; Min. 0.001387516; Valid 133.0; Mean 0.006528177240601504; Max. 0.02242703

Variable Format: numeric

Notes: UNF:6:U8BhjtzVcz+6FcydNG8hJQ==

Label:

README.txt

Text:

General and methodological information. Includes the list of spreadsheet variable names and descriptions.

text/plain

Label:

alsi.png

Text:

Raw map of Al/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.40 Zero values indicate no data for that location.

image/png

Label:

alsiasym.png

Text:

Map of Al/Si "asymmetry parameter" across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 8.45 Zero values indicate no data for that location.

image/png

Label:

alsierr.png

Text:

One-sigma uncertainty in unsmoothed Al/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.154 Zero values indicate no data for that location.

image/png

Label:

alsierrsm.png

Text:

One-sigma uncertainty in smoothed Al/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.0836 Zero values indicate no data for that location.

image/png

Label:

alsires.png

Text:

Map of resolution (in km) of smoothed Al/Si map across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 1916 km Zero values indicate no data for that location.

image/png

Label:

alsism.png

Text:

Smoothed map of Al/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.353 Zero values indicate no data for that location.

image/png

Label:

crsi.png

Text:

Raw map of Cr/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to Cr/Si=0.00221 Zero values indicate no data for that location.

image/png

Label:

crsiasym.png

Text:

Map of Cr/Si "asymmetry parameter" across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 3.60. Zero values indicate no data for that location.

image/png

Label:

crsierr.png

Text:

One-sigma uncertainty in unsmoothed Cr/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.00122 Zero values indicate no data for that location.

image/png

Label:

crsierrsm.png

Text:

One-sigma uncertainty in smoothed Cr/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.000693 Zero values indicate no data for that location.

image/png

Label:

crsires.png

Text:

Map of resolution (in km) of smoothed Cr/Si map across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 2903 km Zero values indicate no data for that location.

image/png

Label:

crsism.png

Text:

Smoothed map of Cr/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.00218387 Zero values indicate no data for that location.

image/png

Label:

mgsi.png

Text:

Raw map of Mg/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to Mg/Si=0.860023

image/png

Label:

mgsiasym.png

Text:

Map of Mg/Si "asymmetry parameter" across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 8.45 Zero values indicate no data for that location.

image/png

Label:

mgsierr.png

Text:

One-sigma uncertainty in unsmoothed Mg/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.223 Zero values indicate no data for that location.

image/png

Label:

mgsierrsm.png

Text:

One-sigma uncertainty in smoothed Mg/Si ratio map across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.149 Zero values indicate no data for that location.

image/png

Label:

mgsires.png

Text:

Map of resolution (in km) of smoothed Mg/Si map across Mercury's surface. Parameter is explained in Nittler et al. (2020) https://doi.org/10.1016/j.icarus.2020.113716 Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 1957 km Zero values indicate no data for that location.

image/png

Label:

mgsism.png

Text:

Smoothed map of Mg/Si ratio across Mercury's surface. Cylindrical projection with quarter-degree pixels. The first column corresponds to longitude –180 to –179.75ºE. Data are linearly scaled to 0–255 with 255 corresponding to 0.0782 Zero values indicate no data for that location.

image/png