The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone

Presented before the XXV IUGG General Assembly, Melbourne, Australia, June 28-July 7, 2011.

Main Authors: Protti, Marino, González, Victor, Kaneda, Yoshiyuki, Brown, Kevin
Format: Otro
Language: Inglés
Published: 2021
Online Access: http://hdl.handle.net/11056/18987
id RepoUNACR18987
recordtype dspace
spelling RepoUNACR189872021-03-25T18:25:34Z The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone Protti, Marino González, Victor Kaneda, Yoshiyuki Brown, Kevin Presented before the XXV IUGG General Assembly, Melbourne, Australia, June 28-July 7, 2011. The Nicoya segment of Middle America Trench has generated large earthquakes in 1883, 1900 and 1950. Since the Nicoya peninsula sits right over the seismogenic zone, it has proved to be a unique site for near field monitoring of interplate interactions. Crustal deformation data indicates that locking on this plate boundary starts 30 km from the trench where the plate interface is around 6 km below the ocean floor. These results make this subduction segment an attractive target for drilling the plate interface and seismogenic zone at several different depths (all within Chikyu drilling capabilities) in a margin where collected data suggests it is close to rupture. This temporal proximity to failure gives a chance to monitor several parameters (such as fluid flow, geochemistry, strain, temperature, tilt, among others) in holes at several distances from the trench prior. The Nicoya segment of the Middle American Trench was one of the target regions of both, the Seismogenic Zone Experiment (SEIZE) and the Subduction Factory (SUBFAC) initiatives of MARGINS. As part of those initiatives and even earlier, this region has been studied for many years with different techniques (high resolution marine seismics, refraction profiles, broad band land and ocean seismic stations, scan mapping, an ALVIN cruise, ODP legs, CGPS, electronic tiltmeters). Therefore, there is already sufficient information to start an IODP proposal. IUGG General Assembly 2021-03-25T18:25:31Z 2021-03-25T18:25:31Z 2011-06-28 http://purl.org/coar/resource_type/c_8544 http://hdl.handle.net/11056/18987 eng Acceso abierto Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf
institution Universidad Nacional de Costa Rica
collection Repositorio UNA-Costa Rica
language Inglés
description Presented before the XXV IUGG General Assembly, Melbourne, Australia, June 28-July 7, 2011.
format Otro
author Protti, Marino
González, Victor
Kaneda, Yoshiyuki
Brown, Kevin
spellingShingle Protti, Marino
González, Victor
Kaneda, Yoshiyuki
Brown, Kevin
The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
author_sort Protti, Marino
title The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
title_short The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
title_full The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
title_fullStr The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
title_full_unstemmed The Nicoya segment of Middle American Trench: an Excellent Target for Drilling and Monitoring the Shallow Portion of the Seismogenic Zone
title_sort nicoya segment of middle american trench: an excellent target for drilling and monitoring the shallow portion of the seismogenic zone
publishDate 2021
url http://hdl.handle.net/11056/18987
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score 12.248849