A Google Earth Database of Central American Volcanic Vents
Satellite imagery in Google Earth reveals 807 volcanic vents for Central America. Most of these have already been recognized. In fact, previous catalogs include many volcanoes that are not obvious in Google Earth and they are not included here. Furthermore, 47 large but deeply eroded volcanoes are n...
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| Formato: | Online |
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Universidad de Costa Rica
2017
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187 |
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RGAC291872023-09-13T01:08:05Z A Google Earth Database of Central American Volcanic Vents Carr, Michael J. Volcanic vents volcanic front volcano types Google Earth Satellite imagery in Google Earth reveals 807 volcanic vents for Central America. Most of these have already been recognized. In fact, previous catalogs include many volcanoes that are not obvious in Google Earth and they are not included here. Furthermore, 47 large but deeply eroded volcanoes are not included because they appear very old. On the other hand, many young vents may be obscured in areas of low quality imagery or in areas of dense cloud forest. High quality Google Earth coverage keeps expanding so this catalog can be improved with time. Lidar imagery would greatly improve vent detection. A significant problem with any list of volcanic features is determining the appropriate cutoff age. Topographic expression is the only available criterion for estimating age for most of the vents and this criterion is highly flawed because of differences in volcanic deposits, weathering, annual rainfall and other factors. Ideally, 40Ar/39Ar ages would be available for most of the volcanoes and the revealed space-time pattern of volcanic activity would allow improved hazard estimates as well as a deeper understanding of the causes and controls of volcanism. Instead, the database is a necessary step toward: a) recognizing important volcanological problems that can attract geochronological research funding and b) encouraging a long-term campaign for determining the temporal development of Central American volcanism. The database is intended as a draft to be used and improved, not a fixed list. Universidad de Costa Rica 2017-06-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf application/xml application/vnd.openxmlformats-officedocument.spreadsheetml.sheet https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187 10.15517/rgac.v0i56.29187 Revista geológica de América central; Vol. 56 (2017): January-June Revista geológica de América central; Vol. 56 (2017): Enero-Junio 2215-261X 0256-7024 spa https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187/29553 https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187/35461 https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187/35462 Derechos de autor 2017 Revista Geológica de América Central |
| institution |
Universidad de Costa Rica |
| collection |
Revista Geológica de América Central |
| language |
spa |
| format |
Online |
| author |
Carr, Michael J. |
| spellingShingle |
Carr, Michael J. A Google Earth Database of Central American Volcanic Vents |
| author_facet |
Carr, Michael J. |
| author_sort |
Carr, Michael J. |
| description |
Satellite imagery in Google Earth reveals 807 volcanic vents for Central America. Most of these have already been recognized. In fact, previous catalogs include many volcanoes that are not obvious in Google Earth and they are not included here. Furthermore, 47 large but deeply eroded volcanoes are not included because they appear very old. On the other hand, many young vents may be obscured in areas of low quality imagery or in areas of dense cloud forest. High quality Google Earth coverage keeps expanding so this catalog can be improved with time. Lidar imagery would greatly improve vent detection. A significant problem with any list of volcanic features is determining the appropriate cutoff age. Topographic expression is the only available criterion for estimating age for most of the vents and this criterion is highly flawed because of differences in volcanic deposits, weathering, annual rainfall and other factors. Ideally, 40Ar/39Ar ages would be available for most of the volcanoes and the revealed space-time pattern of volcanic activity would allow improved hazard estimates as well as a deeper understanding of the causes and controls of volcanism. Instead, the database is a necessary step toward: a) recognizing important volcanological problems that can attract geochronological research funding and b) encouraging a long-term campaign for determining the temporal development of Central American volcanism. The database is intended as a draft to be used and improved, not a fixed list. |
| title |
A Google Earth Database of Central American Volcanic Vents |
| title_short |
A Google Earth Database of Central American Volcanic Vents |
| title_full |
A Google Earth Database of Central American Volcanic Vents |
| title_fullStr |
A Google Earth Database of Central American Volcanic Vents |
| title_full_unstemmed |
A Google Earth Database of Central American Volcanic Vents |
| title_sort |
google earth database of central american volcanic vents |
| publisher |
Universidad de Costa Rica |
| publishDate |
2017 |
| url |
https://revistas.ucr.ac.cr/index.php/geologica/article/view/29187 |
| work_keys_str_mv |
AT carrmichaelj agoogleearthdatabaseofcentralamericanvolcanicvents AT carrmichaelj googleearthdatabaseofcentralamericanvolcanicvents |
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