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About this Digital Document
During the past 30 years, the 9°50'N East Pacific Rise (EPR) hydrothermal field has been the focus of multidisciplinary studies spanning two periods of volcanic activity, in 1991-1992 and in 2005-2006. This research aimed to understand the hydrothermal response preceding the next magmatic event at this mid-ocean ridge. Hydrothermal vent fluids were collected in 2018, 2019, and 2021 from eleven discrete sites impacted by previous eruptions. Geochemical vent fluid analyses investigate fluid circulation depth, water-rock reactions, and gas concentrations. Results demonstrate that multiple sites experienced compositional stability between 2018 and 2019. In 2021 however, several vents were affected by a diking event that occurred in November 2020, as revealed by shifts in fluid circulation depth and gas contents. This study establishes a baseline to better understand volcanic and hydrothermal interaction, both at the scale of each individual vent field, and in a broader, regional scale across multiple well-studied vent complexes.
Full Title
A Time Series of Hydrothermal Vent Fluid Geochemistry Preceding the Next Eruption at 9°50'N East Pacific Rise
Member of
Contributor(s)
Creator: Downing, Connor Christopher
Thesis advisor: McDermott, Jill
Publisher
Lehigh University
Date Issued
2022-05-01
Type
Genre
Form
electronic documents
Department name
Earth and Environmental Sciences
Digital Format
electronic documents
Media type
Creator role
Graduate Student
Subject (LCSH)
Citation
@mastersthesis{downing2022,
title = {A Time Series of Hydrothermal Vent Fluid Geochemistry Preceding the Next Eruption at 9°50'N East Pacific Rise},
author = {Downing, Connor},
year = {2022},
month = may,
publisher = {Lehigh University},
keywords = {east pacific rise, geochemistry, hydrothermal, Time Series, vent fluid},
abstract = {During the past 30 years, the 9°50'N East Pacific Rise (EPR) hydrothermal field has been the focus of multidisciplinary studies spanning two periods of volcanic activity, in 1991-1992 and in 2005-2006. This research aimed to understand the hydrothermal response preceding the next magmatic event at this mid-ocean ridge. Hydrothermal vent fluids were collected in 2018, 2019, and 2021 from eleven discrete sites impacted by previous eruptions. Geochemical vent fluid analyses investigate fluid circulation depth, water-rock reactions, and gas concentrations. Results demonstrate that multiple sites experienced compositional stability between 2018 and 2019. In 2021 however, several vents were affected by a diking event that occurred in November 2020, as revealed by shifts in fluid circulation depth and gas contents. This study establishes a baseline to better understand volcanic and hydrothermal interaction, both at the scale of each individual vent field, and in a broader, regional scale across multiple well-studied vent complexes.},
}