Deep Circulation in the Eastern South Pacific Ocean

It has been suggested in older and recent literature that a broad deep eastern boundary flow is linking the equatorial Pacific Ocean to the Southern Ocean. The depth range of this flow corresponds to the Pacific Deep Water (2500m) where it is suggested by the distribution of primordial 3He originati...

Full description

Bibliographic Details
Other Authors: Faure, Vincent, 1977- (authoraut), Speer, Kevin (professor directing dissertation), Clayson, Carol Anne (outside committee member), Nof, Doron (committee member), Weatherly, Georges (committee member), Landing, William (committee member), Froelich, Philip (committee member), Department of Earth, Ocean and Atmospheric Sciences (degree granting department), Florida State University (degree granting institution)
Format: Text
Language:English
Published: Florida State University
Subjects:
Online Access:http://purl.flvc.org/fsu/fd/FSU_migr_etd-4490
http://fsu.digital.flvc.org/islandora/object/fsu%3A182611/datastream/TN/view/Deep%20Circulation%20in%20the%20Eastern%20South%20Pacific%20Ocean.jpg
id ftfloridastunidc:oai:fsu.digital.flvc.org:fsu_182611
record_format openpolar
spelling ftfloridastunidc:oai:fsu.digital.flvc.org:fsu_182611 2023-05-15T13:52:52+02:00 Deep Circulation in the Eastern South Pacific Ocean Faure, Vincent, 1977- (authoraut) Speer, Kevin (professor directing dissertation) Clayson, Carol Anne (outside committee member) Nof, Doron (committee member) Weatherly, Georges (committee member) Landing, William (committee member) Froelich, Philip (committee member) Department of Earth, Ocean and Atmospheric Sciences (degree granting department) Florida State University (degree granting institution) 1 online resource computer application/pdf http://purl.flvc.org/fsu/fd/FSU_migr_etd-4490 http://fsu.digital.flvc.org/islandora/object/fsu%3A182611/datastream/TN/view/Deep%20Circulation%20in%20the%20Eastern%20South%20Pacific%20Ocean.jpg English eng eng Florida State University This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them. Oceanography Text ftfloridastunidc 2020-08-10T21:24:45Z It has been suggested in older and recent literature that a broad deep eastern boundary flow is linking the equatorial Pacific Ocean to the Southern Ocean. The depth range of this flow corresponds to the Pacific Deep Water (2500m) where it is suggested by the distribution of primordial 3He originating from the East Pacific Rise. In this study, we propose to use a large set of data along with inverse techniques to estimate the stationary advection and diffusion of water properties and tracer concentrations (potential vorticity, potential temperature, salinity, dissolved oxygen and silica concentration) in the area of interest. The various data are combined into an new inverse model first developed by McKeague et al. (2005), Herbei et al. (2006). The model uses a forward advection-diffusion model and Markov Chain Monte-Carlo techniques to give estimates of velocities along and across surfaces of neutral density as well as isopycnal diffusivities. It is composed of 9 layers between the 27.4 and 28 neutral densities. The circulation in the upper layers of the model compares well with direct independent estimates of velocities from subsurface float trajectories (WOCE and Argo). We investigate the water exchange in the deeper layers in regards to the 3He distribution along the Eastern boundary and its mixing with the Antarctic Circumpolar Current. The model is able to estimate vertically dependent rates of oxygen utilization as well as lateral eddy diffusivities of tracers. A Dissertation submitted to the Department of Oceanography in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Summer Semester, 2009. April 25, 2008. Deep Currents, Eastern South Pacific Ocean, Ocean Tracers, Helium, Inverse Problem, Advection-Diffusion Includes bibliographical references. Kevin Speer, Professor Directing Dissertation; Carol Anne Clayson, Outside Committee Member; Doron Nof, Committee Member; Georges Weatherly, Committee Member; William Landing, Committee Member; Philip Froelich, Committee Member. Text Antarc* Antarctic Southern Ocean Florida State University Digital Library (FSUDL) Antarctic Southern Ocean The Antarctic Pacific
institution Open Polar
collection Florida State University Digital Library (FSUDL)
op_collection_id ftfloridastunidc
language English
topic Oceanography
spellingShingle Oceanography
Deep Circulation in the Eastern South Pacific Ocean
topic_facet Oceanography
description It has been suggested in older and recent literature that a broad deep eastern boundary flow is linking the equatorial Pacific Ocean to the Southern Ocean. The depth range of this flow corresponds to the Pacific Deep Water (2500m) where it is suggested by the distribution of primordial 3He originating from the East Pacific Rise. In this study, we propose to use a large set of data along with inverse techniques to estimate the stationary advection and diffusion of water properties and tracer concentrations (potential vorticity, potential temperature, salinity, dissolved oxygen and silica concentration) in the area of interest. The various data are combined into an new inverse model first developed by McKeague et al. (2005), Herbei et al. (2006). The model uses a forward advection-diffusion model and Markov Chain Monte-Carlo techniques to give estimates of velocities along and across surfaces of neutral density as well as isopycnal diffusivities. It is composed of 9 layers between the 27.4 and 28 neutral densities. The circulation in the upper layers of the model compares well with direct independent estimates of velocities from subsurface float trajectories (WOCE and Argo). We investigate the water exchange in the deeper layers in regards to the 3He distribution along the Eastern boundary and its mixing with the Antarctic Circumpolar Current. The model is able to estimate vertically dependent rates of oxygen utilization as well as lateral eddy diffusivities of tracers. A Dissertation submitted to the Department of Oceanography in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Summer Semester, 2009. April 25, 2008. Deep Currents, Eastern South Pacific Ocean, Ocean Tracers, Helium, Inverse Problem, Advection-Diffusion Includes bibliographical references. Kevin Speer, Professor Directing Dissertation; Carol Anne Clayson, Outside Committee Member; Doron Nof, Committee Member; Georges Weatherly, Committee Member; William Landing, Committee Member; Philip Froelich, Committee Member.
author2 Faure, Vincent, 1977- (authoraut)
Speer, Kevin (professor directing dissertation)
Clayson, Carol Anne (outside committee member)
Nof, Doron (committee member)
Weatherly, Georges (committee member)
Landing, William (committee member)
Froelich, Philip (committee member)
Department of Earth, Ocean and Atmospheric Sciences (degree granting department)
Florida State University (degree granting institution)
format Text
title Deep Circulation in the Eastern South Pacific Ocean
title_short Deep Circulation in the Eastern South Pacific Ocean
title_full Deep Circulation in the Eastern South Pacific Ocean
title_fullStr Deep Circulation in the Eastern South Pacific Ocean
title_full_unstemmed Deep Circulation in the Eastern South Pacific Ocean
title_sort deep circulation in the eastern south pacific ocean
publisher Florida State University
url http://purl.flvc.org/fsu/fd/FSU_migr_etd-4490
http://fsu.digital.flvc.org/islandora/object/fsu%3A182611/datastream/TN/view/Deep%20Circulation%20in%20the%20Eastern%20South%20Pacific%20Ocean.jpg
geographic Antarctic
Southern Ocean
The Antarctic
Pacific
geographic_facet Antarctic
Southern Ocean
The Antarctic
Pacific
genre Antarc*
Antarctic
Southern Ocean
genre_facet Antarc*
Antarctic
Southern Ocean
op_rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them.
_version_ 1766257619714965504