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Statistical Assessment of Hydrochemical... - Document (3 M) |
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| Author |
Xian, Qing |
| Title |
Statistical Assessment of Hydrochemical Characteristics of Streams and Rivers in Eastern New England |
| Date created |
2009 |
| Abstract |
This study characterizes the current state of water quality of surface streams and rivers in the eastern New England region. A set of water quality data for nine rivers, part of the USGS National Water-Quality Assessment (NAWQA) Program was statistically evaluated to identify natural and anthropogenic persistent influential factors on water quality in surface waters. Binary analysis and multivariate analysis, mainly Principal Component Analysis (PCA) and Factor Analysis (FA) were applied to determine the least number of independent relationships among multiple chemical components in the data set. Statistical results show that in eight of the nine rivers included in this study, four principal components can explain about 80% of the total variance of the original data. The most significant contributing factors can be identified with: (1) chemical weathering; (2) road salt applications; (3) nutrient cycling; and (4) agricultural/waste water. |
| Use Restrictions |
I hereby allow Boston College to include and preserve my dissertation/thesis in electronic form in the Boston College Institutional Repository, which shall include the right to publicly post my dissertation/thesis on the World Wide Web. I will retain copyright ownership, but I grant to Boston College the non-exclusive right to copy, distribute, and publicly display my dissertation/thesis in any form as may be necessary or convenient in the future as file formats, storage media, and distribution mechanisms evolve. |
| Subject |
principal component analysis (PCA) |
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Eastern New England |
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factor analysis (FA) |
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road salt |
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water quality |
| Publisher |
Boston College |
| Link to Item |
2345/1364 |
| Thesis Advisor |
Hon, Rudolph |
| Degree Name |
MS |
| Degree Grantor |
Boston College. Graduate School of Arts and Sciences |
| Sys. No. |
000001651 |
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