Gravitational potential energy and active deformation in the Apennines
We use velocity measurements from a network of continuous GPS sites spanning the Apennines of peninsular Italy to test the hypothesis that the active deformation of the region is explained by variations in gravitational potential energy of the lithosphere. The simple geometry of the mountain chain a...
| Main Authors: | , , , |
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| Format: | Journal article |
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Elsevier
2014
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| _version_ | 1797089219937566720 |
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| author | D'Agostino, N England, P Hunstad, I Selvaggi, G |
| author_facet | D'Agostino, N England, P Hunstad, I Selvaggi, G |
| author_sort | D'Agostino, N |
| collection | OXFORD |
| description | We use velocity measurements from a network of continuous GPS sites spanning the Apennines of peninsular Italy to test the hypothesis that the active deformation of the region is explained by variations in gravitational potential energy of the lithosphere. The simple geometry of the mountain chain allows us to treat the deformation as two-dimensional, neglecting gradients of velocity along the strike of the chain. Under this assumption, the integral of gravitational potential energy per unit area of the lithosphere (GPE) in the direction perpendicular to the chain is related by a simple expression to the velocity in the same direction. We show that the observed velocities match this expression with an RMS misfit of View the MathML source. This agreement suggests that deformation of the Apennines reflects a balance, within the mountain chain itself, between lateral variations in GPE and the stresses required to deform the lithosphere. Forces arising from processes external to the belt are not required to explain the observations. |
| first_indexed | 2024-03-07T03:01:16Z |
| format | Journal article |
| id | oxford-uuid:b10a173a-3123-4309-b996-eb31b9ba0141 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:01:16Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:b10a173a-3123-4309-b996-eb31b9ba01412022-03-27T04:00:58ZGravitational potential energy and active deformation in the ApenninesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b10a173a-3123-4309-b996-eb31b9ba0141Symplectic Elements at OxfordElsevier2014D'Agostino, NEngland, PHunstad, ISelvaggi, GWe use velocity measurements from a network of continuous GPS sites spanning the Apennines of peninsular Italy to test the hypothesis that the active deformation of the region is explained by variations in gravitational potential energy of the lithosphere. The simple geometry of the mountain chain allows us to treat the deformation as two-dimensional, neglecting gradients of velocity along the strike of the chain. Under this assumption, the integral of gravitational potential energy per unit area of the lithosphere (GPE) in the direction perpendicular to the chain is related by a simple expression to the velocity in the same direction. We show that the observed velocities match this expression with an RMS misfit of View the MathML source. This agreement suggests that deformation of the Apennines reflects a balance, within the mountain chain itself, between lateral variations in GPE and the stresses required to deform the lithosphere. Forces arising from processes external to the belt are not required to explain the observations. |
| spellingShingle | D'Agostino, N England, P Hunstad, I Selvaggi, G Gravitational potential energy and active deformation in the Apennines |
| title | Gravitational potential energy and active deformation in the Apennines |
| title_full | Gravitational potential energy and active deformation in the Apennines |
| title_fullStr | Gravitational potential energy and active deformation in the Apennines |
| title_full_unstemmed | Gravitational potential energy and active deformation in the Apennines |
| title_short | Gravitational potential energy and active deformation in the Apennines |
| title_sort | gravitational potential energy and active deformation in the apennines |
| work_keys_str_mv | AT dagostinon gravitationalpotentialenergyandactivedeformationintheapennines AT englandp gravitationalpotentialenergyandactivedeformationintheapennines AT hunstadi gravitationalpotentialenergyandactivedeformationintheapennines AT selvaggig gravitationalpotentialenergyandactivedeformationintheapennines |