Surveying a natural deep sediment trap in the southwestern Caribbean
Durante julio de 2004 el fondo oceánico del Caribe suroccidental fue explorado con la sonda multihaz del ARC Providencia en el área de la Depresión Providencia (>2600m). También se obtuvieron seis núcleos de sedimento en las paredes y el fondo de la Depresión, que se encuentran congelados. El CIOH busca colaboración de Institutos o Laboratorios con capacidad de utilizar estas muestras en estudios de paleoclima especialmente. During a verification for the IBCCA (International Bathymetric Chart of the Caribbean and Adjacent Regions) project, the ocean floor of the Southwestern Caribbean were surveyed in July 2004 with a multi-beam Atlas HYDROSWEEP MD-230 echo-sounder, on board the Colombian R/V Providencia using a TSS DMS3-05 movement sensor and a Trimble DMS 212H DGPS. In particular, the survey defined the Providencia Depression, a relatively deep (>2600m) bottom feature oriented north-south , 50 miles long by 10 miles wide surrounded by depths shallower than 1100m (Figure 1). On the west side is the slope of the Central American continental shelf braking from around 40m of depth. On the east side, the fragmented lifting of the shallows and islands of the San Andres Archipelago. To the north and south the Providencia Depression is limited by depths of about 1100m (Figure 2). This depression is a deep environment that marks the separation between the actual continental shelf off Central America and the San Andres Archipelago, a detached fragment due to recent movements of the seafloor in probable genetic relation with the motions of the Pacific dorsal, in the prolongation of the fracture zone of Panama. It is an active “scar” (intra-plate) open and deepened by rotative mega- displacement and shear movement. (personal comm. Jean-René Vanney). The geo-morphological situation of Providencia Depression generate a natural sediment trap that was sampled with a piston corer Kalhsico, obtaining cores in the bottom and lateral walls of the Providencia Depression (see Table 1 and Figures 3, 4). These cores are frozen at the Colombian Center of Investigations in Oceanography and Hydrography (CIOH) in Cartagena, Colombia. The CIOH is looking for collaboration in the analysis of these samples. We are interested in the paleo-climate of the region. Those institutes or laboratories that may be interested in sharing this effort please write to jsemon@cioh.org.co.
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2005
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Subjects: | Batimetría, Sedimentos, ASFA_2015::G::Geodynamics, ASFA_2015::B::Bathymetry, |
Online Access: | http://hdl.handle.net/1834/15317 |
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dig-aquadocs-1834-153172021-05-19T06:31:11Z Surveying a natural deep sediment trap in the southwestern Caribbean Andrade Amaya, Carlos Alberto Dirección General Marítima Batimetría Sedimentos ASFA_2015::G::Geodynamics ASFA_2015::B::Bathymetry Durante julio de 2004 el fondo oceánico del Caribe suroccidental fue explorado con la sonda multihaz del ARC Providencia en el área de la Depresión Providencia (>2600m). También se obtuvieron seis núcleos de sedimento en las paredes y el fondo de la Depresión, que se encuentran congelados. El CIOH busca colaboración de Institutos o Laboratorios con capacidad de utilizar estas muestras en estudios de paleoclima especialmente. During a verification for the IBCCA (International Bathymetric Chart of the Caribbean and Adjacent Regions) project, the ocean floor of the Southwestern Caribbean were surveyed in July 2004 with a multi-beam Atlas HYDROSWEEP MD-230 echo-sounder, on board the Colombian R/V Providencia using a TSS DMS3-05 movement sensor and a Trimble DMS 212H DGPS. In particular, the survey defined the Providencia Depression, a relatively deep (>2600m) bottom feature oriented north-south , 50 miles long by 10 miles wide surrounded by depths shallower than 1100m (Figure 1). On the west side is the slope of the Central American continental shelf braking from around 40m of depth. On the east side, the fragmented lifting of the shallows and islands of the San Andres Archipelago. To the north and south the Providencia Depression is limited by depths of about 1100m (Figure 2). This depression is a deep environment that marks the separation between the actual continental shelf off Central America and the San Andres Archipelago, a detached fragment due to recent movements of the seafloor in probable genetic relation with the motions of the Pacific dorsal, in the prolongation of the fracture zone of Panama. It is an active “scar” (intra-plate) open and deepened by rotative mega- displacement and shear movement. (personal comm. Jean-René Vanney). The geo-morphological situation of Providencia Depression generate a natural sediment trap that was sampled with a piston corer Kalhsico, obtaining cores in the bottom and lateral walls of the Providencia Depression (see Table 1 and Figures 3, 4). These cores are frozen at the Colombian Center of Investigations in Oceanography and Hydrography (CIOH) in Cartagena, Colombia. The CIOH is looking for collaboration in the analysis of these samples. We are interested in the paleo-climate of the region. Those institutes or laboratories that may be interested in sharing this effort please write to jsemon@cioh.org.co. Published 2019-06-27T16:59:40Z 2019-06-27T16:59:40Z 2005 Journal Contribution Not Known 0120-0542 10.26640/01200542.23.115_118 http://hdl.handle.net/1834/15317 es http://cecoldodigital.dimar.mil.co/215/ pp.115-118 Caribe colombiano. Providencia |
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Batimetría Sedimentos ASFA_2015::G::Geodynamics ASFA_2015::B::Bathymetry Batimetría Sedimentos ASFA_2015::G::Geodynamics ASFA_2015::B::Bathymetry Andrade Amaya, Carlos Alberto Surveying a natural deep sediment trap in the southwestern Caribbean |
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Durante julio de 2004 el fondo oceánico del Caribe suroccidental fue explorado con la sonda multihaz del ARC Providencia en el área de la Depresión Providencia (>2600m). También se obtuvieron seis núcleos de sedimento en las paredes y el fondo de la Depresión, que se encuentran congelados. El CIOH busca colaboración de Institutos o Laboratorios con capacidad de utilizar estas muestras en estudios de paleoclima especialmente.
During a verification for the IBCCA (International Bathymetric Chart of the Caribbean and Adjacent Regions) project, the ocean floor of the Southwestern Caribbean were surveyed in July 2004 with a multi-beam Atlas HYDROSWEEP MD-230 echo-sounder, on board the Colombian R/V Providencia using a TSS DMS3-05 movement sensor and a Trimble DMS 212H DGPS. In particular, the survey defined the Providencia Depression, a relatively deep (>2600m) bottom feature oriented north-south , 50 miles long by 10 miles wide surrounded by depths shallower than 1100m (Figure 1). On the west side is the slope of the Central American continental shelf braking from around 40m of depth. On the east side, the fragmented lifting of the shallows and islands of the San Andres Archipelago. To the north and south the Providencia Depression is limited by depths of about 1100m (Figure 2). This depression is a deep environment that marks the separation between the actual continental shelf off Central America and the San Andres Archipelago, a detached fragment due to recent movements of the seafloor in probable genetic relation with the motions of the Pacific dorsal, in the prolongation of the fracture zone of Panama. It is an active “scar” (intra-plate) open and deepened by rotative mega- displacement and shear movement. (personal comm. Jean-René Vanney).
The geo-morphological situation of Providencia Depression generate a natural sediment trap that was sampled with a piston corer Kalhsico, obtaining cores in the bottom and lateral walls of the Providencia Depression (see Table 1 and Figures 3, 4). These cores are frozen at the Colombian Center of Investigations in Oceanography and Hydrography (CIOH) in Cartagena, Colombia. The CIOH is looking for collaboration in the analysis of these samples. We are interested in the paleo-climate of the region. Those institutes or laboratories that may be interested in sharing this effort please write to jsemon@cioh.org.co. |
author2 |
Dirección General Marítima |
author_facet |
Dirección General Marítima Andrade Amaya, Carlos Alberto |
format |
Journal Contribution |
topic_facet |
Batimetría Sedimentos ASFA_2015::G::Geodynamics ASFA_2015::B::Bathymetry |
author |
Andrade Amaya, Carlos Alberto |
author_sort |
Andrade Amaya, Carlos Alberto |
title |
Surveying a natural deep sediment trap in the southwestern Caribbean |
title_short |
Surveying a natural deep sediment trap in the southwestern Caribbean |
title_full |
Surveying a natural deep sediment trap in the southwestern Caribbean |
title_fullStr |
Surveying a natural deep sediment trap in the southwestern Caribbean |
title_full_unstemmed |
Surveying a natural deep sediment trap in the southwestern Caribbean |
title_sort |
surveying a natural deep sediment trap in the southwestern caribbean |
publishDate |
2005 |
url |
http://hdl.handle.net/1834/15317 |
work_keys_str_mv |
AT andradeamayacarlosalberto surveyinganaturaldeepsedimenttrapinthesouthwesterncaribbean |
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