The effects of a deep seamount on nutrient, oxygen and chlorophyll distributions in the water column

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Abstract/Contents

Abstract: This research project is part of a collaboration to characterize the physical, chemical and biological effects of an unnamed seamount on its surrounding oceanic environment in the subtropical Pacific gyre at 18.739ºN by 157.067ºW between the big island of Hawaii and Christmas Island. This research project focuses on the physical and chemical structure of the water column and the position and intensity of the DCM. This project analyzes temperature, density, nutrients, fluorescence, extracted chlorophyll a, and dissolved oxygen. We found a general lifting of isotherms, isopycnals, isolines of fluorescence and the DCM across the seamount, and higher concentrations of PO4 and dissolved O2 over and downstream of the seamount. The seamount was encompassed by a cyclonic eddy at the time the research was conducted. However, comparisons between the changes across the seamount and through the rest of the eddy suggest that the seamount does indeed affect the surrounding oceanic environment, intensifying the uplifting trends and potentially leading to an increase in the standing biomass of primary producers as determined by fluorescence measurements.

Type of resource	text
Date created	June 10, 2005

Author	Keslo, Megan

Subject	Stanford@SEA
Subject	S-199
Subject	Hopkins Marine Station
Subject	Department of Biology
Subject	Department of Earth System Science
Subject	BIOHOPK 182H
Subject	BIOHOPK 323H
Subject	EARTHSYS 323
Subject	ESS 323
Subject	seamount
Subject	subtropical Pacific
Subject	gyre
Subject	Hawaii
Subject	Christmas Island
Subject	Kiribati Island
Subject	Kiribati
Subject	water column
Subject	DCM
Subject	temperature
Subject	density
Subject	nutrients
Subject	fluorescence
Subject	chlorophyll
Subject	oxygen
Subject	isotherm
Subject	isopycnal
Subject	isoline
Subject	phosphate
Subject	uplift
Subject	standing biomass
Genre	Student project report

Location	https://purl.stanford.edu/pt732wb3548

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
License: This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).

Preferred Citation: Keslo, Megan. 2005. The effects of a deep seamount on nutrient, oxygen and chlorophyll distributions in the water column. Unpublished Student Work, S-199, Stanford@SEA, Stanford Digital Repository. https://purl.stanford.edu/pt732wb3548.

Stanford@SEA -- Student papers

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