Estimation of the in-situ settling velocity of particles in lakes using a time series sediment trap

RW Douglas, B Rippey, CE Gibson

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

1. We outline a simple method for estimating the in-situ settling velocity of particles in wind disturbed lakes. The total sedimentation rate (primary and secondary sedimentation) was measured during storm events in two lakes using a time series sediment trap. 2. The sediment trap had 12 sample bottles which were programmed to open for periods of 3-4 h, giving total deployment times ranging from 36 to 48 h. 3. Wave mixed layer theory was used to infer if and when sediment resuspension occurred and the first order rate equation was used to estimate the settling velocity of resuspended particles. 4. The settling velocity during three resuspension events in Lough Neagh and one in Lough Macnean were 34.3, 29.5, 24.1 and 77.3 m day(-1), respectively. These are similar to values obtained using recent in-situ video imaging in marine environments, but much larger than previous lake sediment trap studies.
LanguageEnglish
Pages512-518
JournalFreshwater Biology
Volume48
Issue number3
Publication statusPublished - Mar 2003

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settling velocity
sediment trap
time series
resuspension
lake
sedimentation rate
mixed layer
lacustrine deposit
marine environment
sedimentation
sediment
in situ
particle

Cite this

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title = "Estimation of the in-situ settling velocity of particles in lakes using a time series sediment trap",
abstract = "1. We outline a simple method for estimating the in-situ settling velocity of particles in wind disturbed lakes. The total sedimentation rate (primary and secondary sedimentation) was measured during storm events in two lakes using a time series sediment trap. 2. The sediment trap had 12 sample bottles which were programmed to open for periods of 3-4 h, giving total deployment times ranging from 36 to 48 h. 3. Wave mixed layer theory was used to infer if and when sediment resuspension occurred and the first order rate equation was used to estimate the settling velocity of resuspended particles. 4. The settling velocity during three resuspension events in Lough Neagh and one in Lough Macnean were 34.3, 29.5, 24.1 and 77.3 m day(-1), respectively. These are similar to values obtained using recent in-situ video imaging in marine environments, but much larger than previous lake sediment trap studies.",
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Estimation of the in-situ settling velocity of particles in lakes using a time series sediment trap. / Douglas, RW; Rippey, B; Gibson, CE.

In: Freshwater Biology, Vol. 48, No. 3, 03.2003, p. 512-518.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Estimation of the in-situ settling velocity of particles in lakes using a time series sediment trap

AU - Douglas, RW

AU - Rippey, B

AU - Gibson, CE

PY - 2003/3

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N2 - 1. We outline a simple method for estimating the in-situ settling velocity of particles in wind disturbed lakes. The total sedimentation rate (primary and secondary sedimentation) was measured during storm events in two lakes using a time series sediment trap. 2. The sediment trap had 12 sample bottles which were programmed to open for periods of 3-4 h, giving total deployment times ranging from 36 to 48 h. 3. Wave mixed layer theory was used to infer if and when sediment resuspension occurred and the first order rate equation was used to estimate the settling velocity of resuspended particles. 4. The settling velocity during three resuspension events in Lough Neagh and one in Lough Macnean were 34.3, 29.5, 24.1 and 77.3 m day(-1), respectively. These are similar to values obtained using recent in-situ video imaging in marine environments, but much larger than previous lake sediment trap studies.

AB - 1. We outline a simple method for estimating the in-situ settling velocity of particles in wind disturbed lakes. The total sedimentation rate (primary and secondary sedimentation) was measured during storm events in two lakes using a time series sediment trap. 2. The sediment trap had 12 sample bottles which were programmed to open for periods of 3-4 h, giving total deployment times ranging from 36 to 48 h. 3. Wave mixed layer theory was used to infer if and when sediment resuspension occurred and the first order rate equation was used to estimate the settling velocity of resuspended particles. 4. The settling velocity during three resuspension events in Lough Neagh and one in Lough Macnean were 34.3, 29.5, 24.1 and 77.3 m day(-1), respectively. These are similar to values obtained using recent in-situ video imaging in marine environments, but much larger than previous lake sediment trap studies.

M3 - Article

VL - 48

SP - 512

EP - 518

JO - Freshwater Biology

T2 - Freshwater Biology

JF - Freshwater Biology

SN - 0046-5070

IS - 3

ER -