Scaling considerations and sampling strategies in monitoring aquatic ecohydrodynamics

Papadimitrakis, Y; Nihoul, J

dc.contributor.author	Papadimitrakis, Y	en
dc.contributor.author	Nihoul, J	en
dc.date.accessioned	2014-03-01T01:46:07Z
dc.date.available	2014-03-01T01:46:07Z
dc.date.issued	1997	en
dc.identifier.issn	04229894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24858
dc.title	Scaling considerations and sampling strategies in monitoring aquatic ecohydrodynamics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0422-9894(97)80067-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0422-9894(97)80067-0	en
heal.publicationDate	1997	en
heal.abstract	The basic time (and length) scales governing the physical transport and mixing processes in aquatic environments are briefly reviewed in an ecohydrodynamic perspective. Such time scales are: the molecular diffusion time, Td, the falling particle time, Tf, the mixing time, Tm, the advection time, Ta, and the Kolmogorov (or viscous) time, Tk. For, large water bodies, two more time scales can be formulated based on the Coriolis frequency, fc, and the Kibel frequency, fk. These time scales form several spectral windows, which correspond to the scales of external forcing or of intrinsic mechanisms, determine the hydrodynamic processes that may significantly interact with the various populations of the quatic communities and govern the dynamics of the aquatic system. Motions at the time scales of the weather of the aquatic environment are resonant with the ecosystem dynamics and impose to the ecosystem certain length scales through the process of ecohydrodynamic adjustment. Knowledge of such characteristic time scales facilitates the selection of appropriate strategies for sampling environmental quantities and satisfying the frequency sampling requirements. © 1997 Elsevier B.V. All rights reserved.	en
heal.journalName	Elsevier Oceanography Series	en
dc.identifier.doi	10.1016/S0422-9894(97)80067-0	en
dc.identifier.volume	62	en
dc.identifier.issue	C	en
dc.identifier.spage	558	en
dc.identifier.epage	567	en