Show simple item record

dc.contributor.authorDetto, Matteo
dc.contributor.authorKatul, Gabriel G.
dc.contributor.authorSiqueira, Mario B. S.
dc.contributor.authorJuang, Jehn-Yih
dc.contributor.authorStoy, Paul C.
dc.date.accessioned2018-11-01T15:31:44Z
dc.date.available2018-11-01T15:31:44Z
dc.date.issued2000-09
dc.identifier.citationDetto, Matteo, Katul, Gabriel G., Siqueira, Mario B. S., Juang, Jehn-Yih, Stoy, Paul C. (2008) The structure of turbulence near a tall forest edge: The backward facing step flow analogy. Ecological Applications 18: 1420-1435. DOI: 10.1890/06-0920.1en_US
dc.identifier.issn1939-5582
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/14967
dc.description.abstractFlow disturbances near tall forest edges are receiving significant attention in diverse disciplines including ecology, forest management, meteorology, and fluid mechanics. Current theories suggest that near a forest edge, when the flow originates from a forest into a large clearing, the flow retains its forest canopy turbulence structure at the exit point. Here, we propose that this framework is not sufficiently general for dense forested edges and suggest that the flow shares several attributes with backward‐facing step (BFS) flow. Similar analogies, such as rotor‐like circulations, have been proposed by a number of investigators, though the consequences of such circulations on the primary terms in the mean momentum balance at the forest clearing edge have rarely been studied in the field. Using an array of three triaxial sonic anemometers positioned to measure horizontal and vertical gradients of the velocity statistics near a forest edge, we show that the flow structure is more consistent with an intermittent recirculation pattern, rather than a continuous rotor, whose genesis resembles the BFS flow. We also show that the lateral velocity variance, , is the moment that adjusts most slowly with downwind distance as the flow exits from the forest into the clearing. Surprisingly, the longitudinal and vertical velocity variances ( and ) at the forest edge were comparable in magnitude to their respective values at the center of a large grass‐covered forest clearing, suggesting rapid adjustment at the edge. Discussions on how the forest edge modifies the spectra and co‐spectra of momentum fluxes, effective mixing length, and static pressure are also presented.en_US
dc.description.sponsorshipU.S. Department of Energy, Terrestrial Carbon Processes Program (TCP) grant no. DE-FG02-00ER63015 and grant no DEFG02-95ER62083en_US
dc.language.isoenen_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleThe structure of turbulence near a tall forest edge: The backward facing step flow analogyen_US
dc.typeArticleen_US
mus.citation.extentfirstpage1420en_US
mus.citation.extentlastpage1435en_US
mus.citation.issue6en_US
mus.citation.journaltitleEcological Applicationsen_US
mus.citation.volume18en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1890/06-0920.1en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage8en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.