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CRBCZO -- Climate, Stable Isotopes, Well Water Levels -- White Clay Creek Transect A floodplain, Transect C -- (2012-2012)
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| Created: | Nov 19, 2019 at 3:47 a.m. | |
| Last updated: | Dec 23, 2019 at 10:48 p.m. | |
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Abstract
Diana Karwan, Olesya Lazareva, Donald L. Sparks, Anthony Aufdenkampe
The Christina River Basin-Critical Zone Observatory (CRB-CZO), located in the Piedmont region of Southeastern Pennsylvania and northern Delaware, is a partnership between the University of Delaware and the Stroud Water Research Center. At Transect A of the White Clay Creek Watershed (WCCW) of the CRB-CZO, the composition of soil pore-waters and stream was investigated to understand how the geochemical dynamics of Fe- and Mn- along redox gradients affect the C cycle within a floodplain aquifer.
Soil pore-water was collected with in-situ borosilicate glass samplers (50 mm long, 20 mm diameter, 1 μm pore size, Ecotech, Germany) with the attached PTFE (Teflon) tubes (3/1.5 mm i.d./o.d) to sampling bottle. Six samplers were deployed on both sides of the floodplain within a 10-40 cm thick dark organic-rich silty soil that represents a buried pre-settlement wetland soil, underlain gravel, and stream. No pore-water was extracted from the pre-settlement deposits due to unsaturated conditions. Water sampling was carried out for about 14 months (July, 2011 - September, 2012) on biweekly basis except last 2 months in order to evaluate temporal and spatial biogeochemical dynamics of floodplain aquifer under a variety of meteorological and hydrologic conditions. In total, 103 soil pore-water samples were collected and analyzed for DOC, Fe and Mn, pH, temperature, alkalinity, conductivity, major anions, major cations, δD, and δ18O.
Subject Keywords
Coverage
Spatial
Temporal
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Content
Additional Metadata
| Name | Value |
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| czos | Christina |
| czo_id | 2978 |
| citation | Karwan and Lazareva, 2012 |
| keywords | Hydrology, water isotopes, White Clay Creek Watershed, Transect |
| variables | pH, Temperature, Specific conductance, Alkalinity_ total, Oxygen-18, Deuterium, Water level, Calcium, Potassium, Magnesium, Manganese, Sodium, Silicon, Sulfur |
| disciplines | Biogeochemistry, Climatology / Meteorology, Geochemistry / Mineralogy, Hydrology, Soil Science / Pedology |
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
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| National Science Foundation, Earth Sciences Division | 0724971 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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