Morphology and Settling Velocity of Sea Stars (Asterias rubens)

Karen B. Burgaard; Stefan Carstensen; David R. Fuhrman; Camille Saurel; Finbarr G. O’Neill

doi:10.3390/jmse11020296

Morphology and Settling Velocity of Sea Stars (Asterias rubens)

Karen B. Burgaard^*, Stefan Carstensen, David R. Fuhrman, Camille Saurel, Finbarr G. O’Neill

^*Corresponding author for this work

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Abstract

This study presents morphological data and estimates of the settling velocity and drag coefficient of sea stars (Asterias rubens) caught in the Limfjord, Denmark. A geometric model describing the sea star is presented and the thickness and arm width are determined as linear functions of arm length. The volume and mass of the sea stars is well predicted by the geometric model and is in agreement with the experimental measurements. The mean sea star density is determined to be 1095 kg/m3, the mean drag coefficient is estimated to be 2.3 and the settling velocity is shown to vary with the square root of the its size.

Original language	English
Article number	296
Journal	Journal of Marine Science and Engineering
Volume	11
Issue number	2
Number of pages	15
ISSN	2077-1312
DOIs	https://doi.org/10.3390/jmse11020296
Publication status	Published - 2023

Keywords

Settling velocity
Geometric sea star model
Drag coefficient
Morphology
Density

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title = "Morphology and Settling Velocity of Sea Stars (Asterias rubens)",

abstract = "This study presents morphological data and estimates of the settling velocity and drag coefficient of sea stars (Asterias rubens) caught in the Limfjord, Denmark. A geometric model describing the sea star is presented and the thickness and arm width are determined as linear functions of arm length. The volume and mass of the sea stars is well predicted by the geometric model and is in agreement with the experimental measurements. The mean sea star density is determined to be 1095 kg/m3, the mean drag coefficient is estimated to be 2.3 and the settling velocity is shown to vary with the square root of the its size.",

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T1 - Morphology and Settling Velocity of Sea Stars (Asterias rubens)

AU - Burgaard, Karen B.

AU - Carstensen, Stefan

AU - Fuhrman, David R.

AU - Saurel, Camille

AU - O’Neill, Finbarr G.

PY - 2023

Y1 - 2023

N2 - This study presents morphological data and estimates of the settling velocity and drag coefficient of sea stars (Asterias rubens) caught in the Limfjord, Denmark. A geometric model describing the sea star is presented and the thickness and arm width are determined as linear functions of arm length. The volume and mass of the sea stars is well predicted by the geometric model and is in agreement with the experimental measurements. The mean sea star density is determined to be 1095 kg/m3, the mean drag coefficient is estimated to be 2.3 and the settling velocity is shown to vary with the square root of the its size.

AB - This study presents morphological data and estimates of the settling velocity and drag coefficient of sea stars (Asterias rubens) caught in the Limfjord, Denmark. A geometric model describing the sea star is presented and the thickness and arm width are determined as linear functions of arm length. The volume and mass of the sea stars is well predicted by the geometric model and is in agreement with the experimental measurements. The mean sea star density is determined to be 1095 kg/m3, the mean drag coefficient is estimated to be 2.3 and the settling velocity is shown to vary with the square root of the its size.

KW - Settling velocity

KW - Geometric sea star model

KW - Drag coefficient

KW - Morphology

KW - Density

UR - https://doi.org/10.11583/DTU.20160488.v1

U2 - 10.3390/jmse11020296

DO - 10.3390/jmse11020296

M3 - Journal article

SN - 2077-1312

VL - 11

JO - Journal of Marine Science and Engineering

JF - Journal of Marine Science and Engineering

IS - 2

M1 - 296

ER -

Morphology and Settling Velocity of Sea Stars (Asterias rubens)

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Keywords

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