Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System
Submersible Autonomous Moored Instruments for pH and pCO2 (SAMI-pH and SAMI-CO2) were deployed in a coastal upwelling zone on the Oregon Coast to collect unique multi-season, multi-year datasets of carbonate system dynamics. This is the first long-term deployment of the SAMI-pH paired with a SAMI-CO...
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ftunivmontana:oai:scholarworks.umt.edu:etd-11914 2023-07-16T04:00:44+02:00 Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System Harris, Katherine Elizabeth 2013-01-01T08:00:00Z application/pdf https://scholarworks.umt.edu/etd/10867 https://scholarworks.umt.edu/context/etd/article/11914/viewcontent/Harris_umt_0136D_10271.pdf unknown University of Montana https://scholarworks.umt.edu/etd/10867 https://scholarworks.umt.edu/context/etd/article/11914/viewcontent/Harris_umt_0136D_10271.pdf Graduate Student Theses, Dissertations, & Professional Papers dissertation 2013 ftunivmontana 2023-06-27T23:00:00Z Submersible Autonomous Moored Instruments for pH and pCO2 (SAMI-pH and SAMI-CO2) were deployed in a coastal upwelling zone on the Oregon Coast to collect unique multi-season, multi-year datasets of carbonate system dynamics. This is the first long-term deployment of the SAMI-pH paired with a SAMI-CO2. The objectives of this study included (1) improving the accuracy of the SAMI-pH (2) assessing the performance of using paired SAMI-pH and SAMI-CO2 measurements to calculate other carbonate system parameters and (3) analyzing the data to better understand the seasonal, inter-annual, and upwelling variation in the coastal marine carbonate system. SAMI-pH accuracy was improved by better characterization of the pH indicator used in these spectrophotometric measurements. Using paired SAMI-pH and SAMI-CO2 measurements from this study to calculate calcium carbonate saturation states (Ω) occasionally induced significant offsets in the results and so should be used with caution. However, a salinity-derived alkalinity for the region was found to calculate more accurate Ω when paired with either SAMI-pH or SAMI-CO2 measurements. This unique, long-term, high temporal resolution dataset (collected over a period of five years) was used to characterize the carbonate system dynamics in this coastal upwelling zone. Large, fast changes in Ω (>3.0) occurred over a period of a few days and aragonite saturation state (ΩAr) decreased to undersaturation (ΩAr Doctoral or Postdoctoral Thesis sami University of Montana: ScholarWorks |
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University of Montana: ScholarWorks |
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Submersible Autonomous Moored Instruments for pH and pCO2 (SAMI-pH and SAMI-CO2) were deployed in a coastal upwelling zone on the Oregon Coast to collect unique multi-season, multi-year datasets of carbonate system dynamics. This is the first long-term deployment of the SAMI-pH paired with a SAMI-CO2. The objectives of this study included (1) improving the accuracy of the SAMI-pH (2) assessing the performance of using paired SAMI-pH and SAMI-CO2 measurements to calculate other carbonate system parameters and (3) analyzing the data to better understand the seasonal, inter-annual, and upwelling variation in the coastal marine carbonate system. SAMI-pH accuracy was improved by better characterization of the pH indicator used in these spectrophotometric measurements. Using paired SAMI-pH and SAMI-CO2 measurements from this study to calculate calcium carbonate saturation states (Ω) occasionally induced significant offsets in the results and so should be used with caution. However, a salinity-derived alkalinity for the region was found to calculate more accurate Ω when paired with either SAMI-pH or SAMI-CO2 measurements. This unique, long-term, high temporal resolution dataset (collected over a period of five years) was used to characterize the carbonate system dynamics in this coastal upwelling zone. Large, fast changes in Ω (>3.0) occurred over a period of a few days and aragonite saturation state (ΩAr) decreased to undersaturation (ΩAr |
format |
Doctoral or Postdoctoral Thesis |
author |
Harris, Katherine Elizabeth |
spellingShingle |
Harris, Katherine Elizabeth Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
author_facet |
Harris, Katherine Elizabeth |
author_sort |
Harris, Katherine Elizabeth |
title |
Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
title_short |
Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
title_full |
Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
title_fullStr |
Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
title_full_unstemmed |
Applications of Autonomous pH and pCO2 Sensors to Study Inorganic Carbon Dynamics in a Coastal Upwelling System |
title_sort |
applications of autonomous ph and pco2 sensors to study inorganic carbon dynamics in a coastal upwelling system |
publisher |
University of Montana |
publishDate |
2013 |
url |
https://scholarworks.umt.edu/etd/10867 https://scholarworks.umt.edu/context/etd/article/11914/viewcontent/Harris_umt_0136D_10271.pdf |
genre |
sami |
genre_facet |
sami |
op_source |
Graduate Student Theses, Dissertations, & Professional Papers |
op_relation |
https://scholarworks.umt.edu/etd/10867 https://scholarworks.umt.edu/context/etd/article/11914/viewcontent/Harris_umt_0136D_10271.pdf |
_version_ |
1771549834697768960 |