東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Will small diversions of freshwater ...

Olson, Cheyanne Marie.

Linked to FindBook

Google Book

Amazon

博客來

Will small diversions of freshwater inflow affect water quality?

Record Type:	Electronic resources : Monograph/item
Title/Author:	Will small diversions of freshwater inflow affect water quality?/
Author:	Olson, Cheyanne Marie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	64 p.
Notes:	Source: Masters Abstracts International, Volume: 56-03.
Contained By:	Masters Abstracts International56-03(E).
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10263231
ISBN:	9781369685008

Will small diversions of freshwater inflow affect water quality?
Olson, Cheyanne Marie.

Will small diversions of freshwater inflow affect water quality? - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 64 p.

Source: Masters Abstracts International, Volume: 56-03.

Thesis (M.Sc.)--Texas A&M University - Corpus Christi, 2017.

Freshwater inflow is a vital component of an estuary, as several ecological relationships exist between the level of inflow and aspects of estuary function. For future management, it is necessary to know how diversions of freshwater inflow may affect both water quality and ecosystem function within estuaries. The purpose of this study was to examine the effects of variation in freshwater inflow to make inference about water quality variables and estuary function during low inflow periods. This study focused on three bays: Carancahua Bay, San Antonio Bay (including Guadalupe Bay), and Tres Palacios Bay. Data was collected monthly via water quality sampling, and with continuous and discrete multiparameter sondes. Acoustic doppler current profilers (ADCPs) collected current speed and direction daily. Hourly precipitation and wind data was collected from the National Climatic Data Center (NCDC). Daily discharge was collected from two USGS flow gages. Freshwater inflow is responsible for driving nutrient concentrations and salinity ranges, as demonstrated by a principal component analysis. Based on results of this study, San Antonio Bay requires a large amount of freshwater inflow change (above 10,000 ac-ft/mo) to yield changes in water quality response, because it typically receives large volumes of inflow. Conversely, Carancahua Bay and Tres-Palacios Bay both require smaller volumes of freshwater inflow (less than 10,000 ac-ft/mo) to have large (i.e., 30% change) effects on water quality response because these bays receive lesser amounts of inflow. Freshwater inflow also alters net ecosystem metabolism (NEM) of an estuary. Freshwater inflow and salinity both had a significant but weak correlation to NEM when lagged, due to a time lag experienced between drivers and estuary response. The flow-to-water-quality concept created in this study provides a generic framework that can be applied by managers and policy-makers to analyze how specific amounts of flow diverted from, or added to, specific bays may alter water quality conditions.

ISBN: 9781369685008Subjects--Topical Terms:

677245
Environmental science.

Will small diversions of freshwater inflow affect water quality?
LDR:02970nmm a2200301 4500 001 2125193
005 20171113075201.5
008 180830s2017 ||||||||||||||||| ||eng d
020 $a 9781369685008
035 $a (MiAaPQ)AAI10263231
035 $a AAI10263231
040 $a MiAaPQ $c MiAaPQ
100 1 $a Olson, Cheyanne Marie. $3 3287244
245 1 0 $a Will small diversions of freshwater inflow affect water quality?
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 64 p.
500 $a Source: Masters Abstracts International, Volume: 56-03.
500 $a Adviser: Paul Montagna.
502 $a Thesis (M.Sc.)--Texas A&M University - Corpus Christi, 2017.
520 $a Freshwater inflow is a vital component of an estuary, as several ecological relationships exist between the level of inflow and aspects of estuary function. For future management, it is necessary to know how diversions of freshwater inflow may affect both water quality and ecosystem function within estuaries. The purpose of this study was to examine the effects of variation in freshwater inflow to make inference about water quality variables and estuary function during low inflow periods. This study focused on three bays: Carancahua Bay, San Antonio Bay (including Guadalupe Bay), and Tres Palacios Bay. Data was collected monthly via water quality sampling, and with continuous and discrete multiparameter sondes. Acoustic doppler current profilers (ADCPs) collected current speed and direction daily. Hourly precipitation and wind data was collected from the National Climatic Data Center (NCDC). Daily discharge was collected from two USGS flow gages. Freshwater inflow is responsible for driving nutrient concentrations and salinity ranges, as demonstrated by a principal component analysis. Based on results of this study, San Antonio Bay requires a large amount of freshwater inflow change (above 10,000 ac-ft/mo) to yield changes in water quality response, because it typically receives large volumes of inflow. Conversely, Carancahua Bay and Tres-Palacios Bay both require smaller volumes of freshwater inflow (less than 10,000 ac-ft/mo) to have large (i.e., 30% change) effects on water quality response because these bays receive lesser amounts of inflow. Freshwater inflow also alters net ecosystem metabolism (NEM) of an estuary. Freshwater inflow and salinity both had a significant but weak correlation to NEM when lagged, due to a time lag experienced between drivers and estuary response. The flow-to-water-quality concept created in this study provides a generic framework that can be applied by managers and policy-makers to analyze how specific amounts of flow diverted from, or added to, specific bays may alter water quality conditions.
590 $a School code: 1417.
650 4 $a Environmental science. $3 677245
650 4 $a Environmental management. $3 535182
650 4 $a Environmental studies. $3 2122803
690 $a 0768
690 $a 0474
690 $a 0477
710 2 $a Texas A&M University - Corpus Christi. $b Environmental Science. $3 3287245
773 0 $t Masters Abstracts International $g 56-03(E).
790 $a 1417
791 $a M.Sc.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10263231