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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1111/j.1745-6584.2010.00796.x
|2 doi
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|a pubmed25n0686.xml
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|a (DE-627)NLM205722814
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|a (NLM)21306360
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Miller, Ronald B
|e verfasserin
|4 aut
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|a Design and application of a direct-push vadose zone gravel permeameter
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 21.03.2012
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|a Date Revised 29.08.2012
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|a published: Print-Electronic
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|a CommentIn: Ground Water. 2012 Jul-Aug;50(4):511-2; discussion 512-3. doi: 10.1111/j.1745-6584.2012.00938.x. - PMID 22536823
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|a Citation Status MEDLINE
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|a © 2011, The Author(s). Ground Water © 2011, National Ground Water Association.
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|a A borehole permeameter is well suited for testing saturated hydraulic conductivity (K(sat)) at specific depths in the vadose zone. Most applications of the method involve fine-grained soils that allow hand auguring of test holes and require a small water reservoir to maintain a constant head. In non-cohesive gravels, hand-dug test holes are difficult to excavate, holes are prone to collapse, and large volumes of water are necessary to maintain a constant head for the duration of the test. For coarse alluvial gravels, a direct-push steel permeameter was designed to place a slotted pipe at a specific sampling depth. Measurements can be made at successive depths at the same location. A 3790 L (1000 gallons) trailer-mounted water tank maintained a constant head in the permeameter. Head in the portable tank was measured with a pressure transducer and flow was calculated based on a volumetric rating curve. A U.S. Bureau of Reclamation analytical method was utilized to calculate K(sat). Measurements with the permeameter at a field site were similar to those reported from falling-head tests
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Heeren, Derek M
|e verfasserin
|4 aut
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|a Fox, Garey A
|e verfasserin
|4 aut
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| 700 |
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|a Storm, Daniel E
|e verfasserin
|4 aut
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| 700 |
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|a Halihan, Todd
|e verfasserin
|4 aut
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|i Enthalten in
|t Ground water
|d 1998
|g 49(2011), 6 vom: 01. Nov., Seite 920-5
|w (DE-627)NLM098182528
|x 1745-6584
|7 nnns
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|g volume:49
|g year:2011
|g number:6
|g day:01
|g month:11
|g pages:920-5
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|u http://dx.doi.org/10.1111/j.1745-6584.2010.00796.x
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