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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Elemental Mapping by Dawn Reveals Exogenic H in Vesta’s Regolith
|
|---|---|
| Published in |
Science, September 2012
|
| DOI | 10.1126/science.1225354 |
| Pubmed ID | |
| Authors |
Thomas H. Prettyman, David W. Mittlefehldt, Naoyuki Yamashita, David J. Lawrence, Andrew W. Beck, William C. Feldman, Timothy J. McCoy, Harry Y. McSween, Michael J. Toplis, Timothy N. Titus, Pasquale Tricarico, Robert C. Reedy, John S. Hendricks, Olivier Forni, Lucille Le Corre, Jian-Yang Li, Hugau Mizzon, Vishnu Reddy, Carol A. Raymond, Christopher T. Russell |
| Abstract |
Using Dawn's Gamma Ray and Neutron Detector, we tested models of Vesta's evolution based on studies of howardite, eucrite, and diogenite (HED) meteorites. Global Fe/O and Fe/Si ratios are consistent with HED compositions. Neutron measurements confirm that a thick, diogenitic lower crust is exposed in the Rheasilvia basin, which is consistent with global magmatic differentiation. Vesta's regolith contains substantial amounts of hydrogen. The highest hydrogen concentrations coincide with older, low-albedo regions near the equator, where water ice is unstable. The young, Rheasilvia basin contains the lowest concentrations. These observations are consistent with gradual accumulation of hydrogen by infall of carbonaceous chondrites--observed as clasts in some howardites--and subsequent removal or burial of this material by large impacts. |
X Demographics
The data shown below were collected from the profiles of 9 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Spain | 1 | 11% |
| United States | 1 | 11% |
| United Kingdom | 1 | 11% |
| Thailand | 1 | 11% |
| Colombia | 1 | 11% |
| Unknown | 4 | 44% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 8 | 89% |
| Practitioners (doctors, other healthcare professionals) | 1 | 11% |
Mendeley readers
The data shown below were compiled from readership statistics for 69 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 1% |
| Sweden | 1 | 1% |
| Puerto Rico | 1 | 1% |
| Unknown | 66 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 18 | 26% |
| Student > Ph. D. Student | 16 | 23% |
| Student > Doctoral Student | 5 | 7% |
| Professor | 4 | 6% |
| Student > Postgraduate | 4 | 6% |
| Other | 14 | 20% |
| Unknown | 8 | 12% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 25 | 36% |
| Physics and Astronomy | 19 | 28% |
| Arts and Humanities | 2 | 3% |
| Agricultural and Biological Sciences | 2 | 3% |
| Materials Science | 2 | 3% |
| Other | 5 | 7% |
| Unknown | 14 | 20% |
Attention Score in Context
This research output has an Altmetric Attention Score of 56. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 March 2023.
All research outputs
#760,793
of 25,377,790 outputs
Outputs from Science
#15,915
of 82,914 outputs
Outputs of similar age
#4,081
of 188,915 outputs
Outputs of similar age from Science
#107
of 798 outputs
Altmetric has tracked 25,377,790 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 82,914 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 65.7. This one has done well, scoring higher than 80% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 188,915 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 798 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 86% of its contemporaries.