Co-seismic deformation of an estuarine terrace, Constitución, Central Chile
In the terrace Te, of Constitución, many fractures and associated deformations of its platform appeared in the street pavements after the earthquake of 02.27.2010. On this basis, this work deals with the co-seismic deformation in this terrace, observed by means of survey of fractures and associated...
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| Format: | Article |
| Language: | English |
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Universidad de Chile, Departamento de Geografía
2015-06-01
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| Series: | Investigaciones Geográficas |
| Online Access: | https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/36673 |
| _version_ | 1798044921022644224 |
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| author | José F. Araya Vergara |
| author_facet | José F. Araya Vergara |
| author_sort | José F. Araya Vergara |
| collection | DOAJ |
| description | In the terrace Te, of Constitución, many fractures and associated deformations of its platform appeared in the street pavements after the earthquake of 02.27.2010. On this basis, this work deals with the co-seismic deformation in this terrace, observed by means of survey of fractures and associated superficial deformations. The principal undulated and irregular surface of the terrace shows no difference between the profiles surveyed before and after the 2010 seism, with exception of those that represent a minor part in the northward sector. In exchange, the flagstones or slabs of pavement show brittle micro-deformations or pop up like array structures associated to micro fractures produced during the seism. There is great dissimilarity of size order between principal irregularities of the terrace surface (undulations) and micro-deformations. The principal irregularities of the terrace Te indicate that its undulated form is inherited and older than the seism of 02.27.2010. Only a minor part represents a 2010 co-seismic deformation with gentle warping of the inherited undulation during the seism. In exchange, the flagstone dislocations or brittle deformations shown as pop ups like array are co-seismic microforms. They appear only as small tectonic deformations in the epidermis of the inherited undulated surface. Their apparent random distribution is possibly the result of a complex interaction between the seismic waves and the inherited topography, producing strain structures. |
| first_indexed | 2024-04-11T23:11:37Z |
| format | Article |
| id | doaj.art-08f79fe466e74e89ab221b63f74ce4a9 |
| institution | Directory Open Access Journal |
| issn | 0718-9575 0719-5370 |
| language | English |
| last_indexed | 2024-04-11T23:11:37Z |
| publishDate | 2015-06-01 |
| publisher | Universidad de Chile, Departamento de Geografía |
| record_format | Article |
| series | Investigaciones Geográficas |
| spelling | doaj.art-08f79fe466e74e89ab221b63f74ce4a92022-12-22T03:57:47ZengUniversidad de Chile, Departamento de GeografíaInvestigaciones Geográficas0718-95750719-53702015-06-0148ág. 31810.5354/0719-5370.2014.3667336673Co-seismic deformation of an estuarine terrace, Constitución, Central ChileJosé F. Araya Vergara0Department of Geography, University of Chile, Av. Portugal 84, SantiagoIn the terrace Te, of Constitución, many fractures and associated deformations of its platform appeared in the street pavements after the earthquake of 02.27.2010. On this basis, this work deals with the co-seismic deformation in this terrace, observed by means of survey of fractures and associated superficial deformations. The principal undulated and irregular surface of the terrace shows no difference between the profiles surveyed before and after the 2010 seism, with exception of those that represent a minor part in the northward sector. In exchange, the flagstones or slabs of pavement show brittle micro-deformations or pop up like array structures associated to micro fractures produced during the seism. There is great dissimilarity of size order between principal irregularities of the terrace surface (undulations) and micro-deformations. The principal irregularities of the terrace Te indicate that its undulated form is inherited and older than the seism of 02.27.2010. Only a minor part represents a 2010 co-seismic deformation with gentle warping of the inherited undulation during the seism. In exchange, the flagstone dislocations or brittle deformations shown as pop ups like array are co-seismic microforms. They appear only as small tectonic deformations in the epidermis of the inherited undulated surface. Their apparent random distribution is possibly the result of a complex interaction between the seismic waves and the inherited topography, producing strain structures.https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/36673 |
| spellingShingle | José F. Araya Vergara Co-seismic deformation of an estuarine terrace, Constitución, Central Chile Investigaciones Geográficas |
| title | Co-seismic deformation of an estuarine terrace, Constitución, Central Chile |
| title_full | Co-seismic deformation of an estuarine terrace, Constitución, Central Chile |
| title_fullStr | Co-seismic deformation of an estuarine terrace, Constitución, Central Chile |
| title_full_unstemmed | Co-seismic deformation of an estuarine terrace, Constitución, Central Chile |
| title_short | Co-seismic deformation of an estuarine terrace, Constitución, Central Chile |
| title_sort | co seismic deformation of an estuarine terrace constitucion central chile |
| url | https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/36673 |
| work_keys_str_mv | AT josefarayavergara coseismicdeformationofanestuarineterraceconstitucioncentralchile |