Constraining alkalinity sources to a secondary bay in South Texas
A thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE in ENVIRONMENTAL SCIENCE from Texas A&M University-Corpus Christi in Corpus Christi, Texas. Submarine groundwater discharge (SGD) is an important pathway for solute transfer from land to sea. With r...
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fttexasamucorpus:oai:tamucc-ir.tdl.org:1969.6/694 2023-10-25T01:42:30+02:00 Constraining alkalinity sources to a secondary bay in South Texas Trevino, Melissa Murgulet, Dorina 2016-08 application/pdf http://hdl.handle.net/1969.6/694 en_US eng http://hdl.handle.net/1969.6/694 This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher. Alkalinity Alkalinity constraints Carbonate Flooding Secondary Bay submarine groundwater discharge Text Thesis 2016 fttexasamucorpus 2023-09-25T10:23:24Z A thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE in ENVIRONMENTAL SCIENCE from Texas A&M University-Corpus Christi in Corpus Christi, Texas. Submarine groundwater discharge (SGD) is an important pathway for solute transfer from land to sea. With recent atmospheric carbon dioxide (CO2) increase, global concerns over oceanic and estuarine acidification have ascended. To better understand the natural ability of estuaries to buffer decreasing pH levels and assist in ocean acidification mitigation studies, overlooked sources of total alkalinity (TA) need to be considered. This study investigates TA changes in Nueces Bay (a secondary bay adjacent to Corpus Christi Bay in the Gulf of Mexico), at scales spanning from hours to seasonal, by incorporating submarine groundwater discharge (SGD) rates. TA concentrations within the bay fluctuated from December 2014 to December 2015 (December, 2014: 2527.6 µM; March, 2015: 2341.0 µM; June, 2015: 2765.1 µM; September, 2015: 2869.8 µM; December, 2015: 2638.6 µM). These observed changes in TA among the sampling events were mostly affected by different rates of SGD and biogeochemical reactions, while discharge from Nueces River was only important after significant rain events and flooding (June 2015), increasing the average TA (March, 2015: 2341.0 µM to June, 2015: 2765.1 µM) of the bay. Dry periods (March 2015) indicated consumption of DIC in the form of calcification may occur at some locations. SGD rates are the highest during the dry seasons (March 2015: 9.2 · 10-1 m3/d), thus there is an increased export of TA from groundwater. SGD, also has a lag effect post flooding (September-2015 to December-2015), as discharge at the shoreline increased (north shoreline of the Nueces Bay: 6.5 · 10-1 to 9.0 · 10-1 m3/d; south shoreline: 4.5 · 10-1 to 8.8 · 10-1 m3/d) and elevated SGD-derived TA input. Under unimpaired conditions, Nueces River would likely have a significant role on the bay’s alkalinity given the high groundwater ... Thesis Ocean acidification Texas A&M University - Corpus Christi: DSpace Repository |
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Open Polar |
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Texas A&M University - Corpus Christi: DSpace Repository |
op_collection_id |
fttexasamucorpus |
language |
English |
topic |
Alkalinity Alkalinity constraints Carbonate Flooding Secondary Bay submarine groundwater discharge |
spellingShingle |
Alkalinity Alkalinity constraints Carbonate Flooding Secondary Bay submarine groundwater discharge Trevino, Melissa Constraining alkalinity sources to a secondary bay in South Texas |
topic_facet |
Alkalinity Alkalinity constraints Carbonate Flooding Secondary Bay submarine groundwater discharge |
description |
A thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE in ENVIRONMENTAL SCIENCE from Texas A&M University-Corpus Christi in Corpus Christi, Texas. Submarine groundwater discharge (SGD) is an important pathway for solute transfer from land to sea. With recent atmospheric carbon dioxide (CO2) increase, global concerns over oceanic and estuarine acidification have ascended. To better understand the natural ability of estuaries to buffer decreasing pH levels and assist in ocean acidification mitigation studies, overlooked sources of total alkalinity (TA) need to be considered. This study investigates TA changes in Nueces Bay (a secondary bay adjacent to Corpus Christi Bay in the Gulf of Mexico), at scales spanning from hours to seasonal, by incorporating submarine groundwater discharge (SGD) rates. TA concentrations within the bay fluctuated from December 2014 to December 2015 (December, 2014: 2527.6 µM; March, 2015: 2341.0 µM; June, 2015: 2765.1 µM; September, 2015: 2869.8 µM; December, 2015: 2638.6 µM). These observed changes in TA among the sampling events were mostly affected by different rates of SGD and biogeochemical reactions, while discharge from Nueces River was only important after significant rain events and flooding (June 2015), increasing the average TA (March, 2015: 2341.0 µM to June, 2015: 2765.1 µM) of the bay. Dry periods (March 2015) indicated consumption of DIC in the form of calcification may occur at some locations. SGD rates are the highest during the dry seasons (March 2015: 9.2 · 10-1 m3/d), thus there is an increased export of TA from groundwater. SGD, also has a lag effect post flooding (September-2015 to December-2015), as discharge at the shoreline increased (north shoreline of the Nueces Bay: 6.5 · 10-1 to 9.0 · 10-1 m3/d; south shoreline: 4.5 · 10-1 to 8.8 · 10-1 m3/d) and elevated SGD-derived TA input. Under unimpaired conditions, Nueces River would likely have a significant role on the bay’s alkalinity given the high groundwater ... |
author2 |
Murgulet, Dorina |
format |
Thesis |
author |
Trevino, Melissa |
author_facet |
Trevino, Melissa |
author_sort |
Trevino, Melissa |
title |
Constraining alkalinity sources to a secondary bay in South Texas |
title_short |
Constraining alkalinity sources to a secondary bay in South Texas |
title_full |
Constraining alkalinity sources to a secondary bay in South Texas |
title_fullStr |
Constraining alkalinity sources to a secondary bay in South Texas |
title_full_unstemmed |
Constraining alkalinity sources to a secondary bay in South Texas |
title_sort |
constraining alkalinity sources to a secondary bay in south texas |
publishDate |
2016 |
url |
http://hdl.handle.net/1969.6/694 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://hdl.handle.net/1969.6/694 |
op_rights |
This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher. |
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1780739112356020224 |