New CCM technique for sheet flow measurements and its first application in swash zone experiments

J. van der Zanden; J.M. Alsina; I. Caceres; R.H. Buijsrogge; J.S. Ribberink

New CCM technique for sheet flow measurements and its first application in swash zone experiments

J. van der Zanden, J.M. Alsina, I. Caceres, R.H. Buijsrogge, J.S. Ribberink

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

We present here a new conductivity-based system for measuring concentrations and grain velocities in the sheet-flow layer. The system is equipped with a new technique that translates measured concentrations back into vertical sensor movement, which enables the measuring probes to track a dynamic bed level. The new CCM system was applied for the first time during a series of swash zone experiments with bichromatic wave conditions. The results show a rapid erosion event with an erosion depth of an estimated 5 mm at the start of the uprush, after which the suspended sediment is advected to the upper swash. Sediment is transported back and deposited to the lower swash mainly during the second half of the backwash. The sheet-flow behaviour clearly differs from observations for non-breaking waves, with both the vertical concentration gradient and its mean vertical position varying within the wave group cycle.

Original language	English
Title of host publication	Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal
Editors	F. Sancho, C. Fortes, R. Tomasicchio
Place of Publication	Lisbon, Portugal
Publisher	LNEC
Pages	1-10
Publication status	Published - 4 Jun 2013
Event	6th International Short Course/Conference on Applied Coastal Research, SCACR 2013 - National Laboratory for Civil Engineering (LNEC), Lisbon, Portugal Duration: 4 Jun 2013 → 7 Jun 2013 Conference number: 6 http://www.scacr.eu/

Conference

Conference	6th International Short Course/Conference on Applied Coastal Research, SCACR 2013
Abbreviated title	SCACR
Country/Territory	Portugal
City	Lisbon
Period	4/06/13 → 7/06/13
Internet address	http://www.scacr.eu/

Keywords

METIS-296647
IR-90775

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van der Zanden, J., Alsina, J. M., Caceres, I., Buijsrogge, R. H., & Ribberink, J. S. (2013). New CCM technique for sheet flow measurements and its first application in swash zone experiments. In F. Sancho, C. Fortes, & R. Tomasicchio (Eds.), Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal (pp. 1-10). LNEC.

van der Zanden, J. ; Alsina, J.M. ; Caceres, I. et al. / New CCM technique for sheet flow measurements and its first application in swash zone experiments. Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal. editor / F. Sancho ; C. Fortes ; R. Tomasicchio. Lisbon, Portugal : LNEC, 2013. pp. 1-10

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title = "New CCM technique for sheet flow measurements and its first application in swash zone experiments",

abstract = "We present here a new conductivity-based system for measuring concentrations and grain velocities in the sheet-flow layer. The system is equipped with a new technique that translates measured concentrations back into vertical sensor movement, which enables the measuring probes to track a dynamic bed level. The new CCM system was applied for the first time during a series of swash zone experiments with bichromatic wave conditions. The results show a rapid erosion event with an erosion depth of an estimated 5 mm at the start of the uprush, after which the suspended sediment is advected to the upper swash. Sediment is transported back and deposited to the lower swash mainly during the second half of the backwash. The sheet-flow behaviour clearly differs from observations for non-breaking waves, with both the vertical concentration gradient and its mean vertical position varying within the wave group cycle.",

keywords = "METIS-296647, IR-90775",

author = "{van der Zanden}, J. and J.M. Alsina and I. Caceres and R.H. Buijsrogge and J.S. Ribberink",

year = "2013",

month = jun,

day = "4",

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pages = "1--10",

editor = "F. Sancho and C. Fortes and R. Tomasicchio",

booktitle = "Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal",

publisher = "LNEC",

address = "Portugal",

note = "6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, SCACR ; Conference date: 04-06-2013 Through 07-06-2013",

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van der Zanden, J, Alsina, JM, Caceres, I, Buijsrogge, RH & Ribberink, JS 2013, New CCM technique for sheet flow measurements and its first application in swash zone experiments. in F Sancho, C Fortes & R Tomasicchio (eds), Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal. LNEC, Lisbon, Portugal, pp. 1-10, 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, Lisbon, Portugal, 4/06/13.

New CCM technique for sheet flow measurements and its first application in swash zone experiments. / van der Zanden, J.; Alsina, J.M.; Caceres, I. et al.
Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal. ed. / F. Sancho; C. Fortes; R. Tomasicchio. Lisbon, Portugal: LNEC, 2013. p. 1-10.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - New CCM technique for sheet flow measurements and its first application in swash zone experiments

AU - van der Zanden, J.

AU - Alsina, J.M.

AU - Caceres, I.

AU - Buijsrogge, R.H.

AU - Ribberink, J.S.

N1 - Conference code: 6

PY - 2013/6/4

Y1 - 2013/6/4

N2 - We present here a new conductivity-based system for measuring concentrations and grain velocities in the sheet-flow layer. The system is equipped with a new technique that translates measured concentrations back into vertical sensor movement, which enables the measuring probes to track a dynamic bed level. The new CCM system was applied for the first time during a series of swash zone experiments with bichromatic wave conditions. The results show a rapid erosion event with an erosion depth of an estimated 5 mm at the start of the uprush, after which the suspended sediment is advected to the upper swash. Sediment is transported back and deposited to the lower swash mainly during the second half of the backwash. The sheet-flow behaviour clearly differs from observations for non-breaking waves, with both the vertical concentration gradient and its mean vertical position varying within the wave group cycle.

AB - We present here a new conductivity-based system for measuring concentrations and grain velocities in the sheet-flow layer. The system is equipped with a new technique that translates measured concentrations back into vertical sensor movement, which enables the measuring probes to track a dynamic bed level. The new CCM system was applied for the first time during a series of swash zone experiments with bichromatic wave conditions. The results show a rapid erosion event with an erosion depth of an estimated 5 mm at the start of the uprush, after which the suspended sediment is advected to the upper swash. Sediment is transported back and deposited to the lower swash mainly during the second half of the backwash. The sheet-flow behaviour clearly differs from observations for non-breaking waves, with both the vertical concentration gradient and its mean vertical position varying within the wave group cycle.

KW - METIS-296647

KW - IR-90775

M3 - Conference contribution

SP - 1

EP - 10

BT - Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal

A2 - Sancho, F.

A2 - Fortes, C.

A2 - Tomasicchio, R.

PB - LNEC

CY - Lisbon, Portugal

T2 - 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013

Y2 - 4 June 2013 through 7 June 2013

ER -

van der Zanden J, Alsina JM, Caceres I, Buijsrogge RH, Ribberink JS. New CCM technique for sheet flow measurements and its first application in swash zone experiments. In Sancho F, Fortes C, Tomasicchio R, editors, Proceedings of the 6th International Short Course/Conference on Applied Coastal Research, SCACR 2013, 4-7- June 2013, Lisbon, Portugal. Lisbon, Portugal: LNEC. 2013. p. 1-10

New CCM technique for sheet flow measurements and its first application in swash zone experiments

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