| Title |
Changes in Seismic Anisotropy Shed Light on the Nature of the Gutenberg Discontinuity
|
|---|---|
| Published in |
Science, February 2014
|
| DOI | 10.1126/science.1246724 |
| Pubmed ID | |
| Authors |
Caroline Beghein, Kaiqing Yuan, Nicholas Schmerr, Zheng Xing |
| Abstract |
The boundary between the lithosphere and asthenosphere is associated with a platewide high-seismic velocity "lid" overlying lowered velocities, consistent with thermal models. Seismic body waves also intermittently detect a sharp velocity reduction at similar depths, the Gutenberg (G) discontinuity, which cannot be explained by temperature alone. We compared an anisotropic tomography model with detections of the G to evaluate their context and relation to the lithosphere-asthenosphere boundary (LAB). We find that the G is primarily associated with vertical changes in azimuthal anisotropy and lies above a thermally controlled LAB, implying that the two are not equivalent interfaces. The origin of the G is a result of frozen-in lithospheric structures, regional compositional variations of the mantle, or dynamically perturbed LAB. |
X Demographics
The data shown below were collected from the profiles of 5 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 20% |
| Unknown | 4 | 80% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 5 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 114 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 4% |
| Ireland | 1 | <1% |
| Australia | 1 | <1% |
| Unknown | 108 | 95% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 32 | 28% |
| Researcher | 15 | 13% |
| Professor | 15 | 13% |
| Student > Bachelor | 10 | 9% |
| Professor > Associate Professor | 10 | 9% |
| Other | 24 | 21% |
| Unknown | 8 | 7% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 95 | 83% |
| Unspecified | 1 | <1% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | <1% |
| Psychology | 1 | <1% |
| Agricultural and Biological Sciences | 1 | <1% |
| Other | 2 | 2% |
| Unknown | 13 | 11% |
Attention Score in Context
This research output has an Altmetric Attention Score of 43. 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 15 April 2014.
All research outputs
#951,547
of 25,374,917 outputs
Outputs from Science
#18,322
of 82,914 outputs
Outputs of similar age
#9,220
of 235,870 outputs
Outputs of similar age from Science
#173
of 840 outputs
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