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  "author": "Tjeerd Bouma (Royal Netherlands Institute for Sea 
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  "author": "Tjeerd Bouma (Royal Netherlands Institute for Sea 
            
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Research)",
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Research)",
            
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  "author_email": "tjeerd.bouma@nioz.nl",
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  "author_email": "tjeerd.bouma@nioz.nl",
            
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  "code": "7b.b.0j",
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  "code": "7b.b.0j",
            
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  "contributor": "Royal Netherlands Institute for Sea Research 
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  "contributor": "Royal Netherlands Institute for Sea Research 
            
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(NIOZ)",
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(NIOZ)",
            
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  "creator_user_id": "1b3d3614-6303-4f5e-b279-a4a8078670d1",
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  "creator_user_id": "1b3d3614-6303-4f5e-b279-a4a8078670d1",
            
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  "creators": 
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  "creators": 
            
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:\"Tjitske\",\"lastname\":\"Kooistra\",\"orcid\":\"0000-0003-2366-4099 
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:\"Tjitske\",\"lastname\":\"Kooistra\",\"orcid\":\"0000-0003-2366-4099 
            
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\",\"affiliation\":\"Royal Netherlands Institute for Sea 
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\",\"affiliation\":\"Royal Netherlands Institute for Sea 
            
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ingauthor\":false,\"contactemailaddress\":null,\"formatted\":\"Tjitske 
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ingauthor\":false,\"contactemailaddress\":null,\"formatted\":\"Tjitske 
            
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Kooistra - Royal Netherlands Institute for Sea Research - ORCID: 
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Kooistra - Royal Netherlands Institute for Sea Research - ORCID: 
            
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0000-0003-2366-4099 \"},{\"firstname\":\"Steven 
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0000-0003-2366-4099 \"},{\"firstname\":\"Steven 
            
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"Haarbosch\",\"orcid\":\"0009-0005-1845-5606\",\"affiliation\":\"Delft 
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"Haarbosch\",\"orcid\":\"0009-0005-1845-5606\",\"affiliation\":\"Delft 
            
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University of 
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University of 
            
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ndingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Steven 
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ndingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Steven 
            
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H. Haarbosch - Delft University of Technology - ORCID: 
18
H. Haarbosch - Delft University of Technology - ORCID: 
            
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0009-0005-1845-5606\"},{\"firstname\":\"Jorn 
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0009-0005-1845-5606\"},{\"firstname\":\"Jorn 
            
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:\"Bosma\",\"orcid\":\"0000-0002-3275-3686\",\"affiliation\":\"Utrecht 
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:\"Bosma\",\"orcid\":\"0000-0002-3275-3686\",\"affiliation\":\"Utrecht 
            
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pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Jorn 
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pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Jorn 
            
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W. Bosma - Utrecht University - ORCID: 
22
W. Bosma - Utrecht University - ORCID: 
            
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\":\"Bouma\",\"orcid\":\"0000-0001-7824-7546\",\"affiliation\":\"Royal 
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\":\"Bouma\",\"orcid\":\"0000-0001-7824-7546\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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"contactemailaddress\":\"tjeerd.bouma@nioz.nl\",\"formatted\":\"Tjeerd 
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"contactemailaddress\":\"tjeerd.bouma@nioz.nl\",\"formatted\":\"Tjeerd 
            
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Bouma - Royal Netherlands Institute for Sea Research - ORCID: 
26
Bouma - Royal Netherlands Institute for Sea Research - ORCID: 
            
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0000-0001-7824-7546 - Corresponding Author - 
27
0000-0001-7824-7546 - Corresponding Author - 
            
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tjeerd.bouma@nioz.nl\"},{\"firstname\":\"Bram C.\",\"lastname\":\"van 
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tjeerd.bouma@nioz.nl\"},{\"firstname\":\"Bram C.\",\"lastname\":\"van 
            
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Prooijen\",\"orcid\":\"0000-0003-1375-1498\",\"affiliation\":\"Delft 
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Prooijen\",\"orcid\":\"0000-0003-1375-1498\",\"affiliation\":\"Delft 
            
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University of 
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University of 
            
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pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Bram 
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pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Bram 
            
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C. van Prooijen - Delft University of Technology - ORCID: 
32
C. van Prooijen - Delft University of Technology - ORCID: 
            
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\"Soetaert\",\"orcid\":\"0000-0003-4603-7100\",\"affiliation\":\"Royal 
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\"Soetaert\",\"orcid\":\"0000-0003-4603-7100\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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dingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Karline 
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dingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Karline 
            
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Soetaert - Royal Netherlands Institute for Sea Research - ORCID: 
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Soetaert - Royal Netherlands Institute for Sea Research - ORCID: 
            
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:\"Pearson\",\"orcid\":\"0000-0002-3986-4469\",\"affiliation\":\"Royal 
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:\"Pearson\",\"orcid\":\"0000-0002-3986-4469\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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ndingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Stuart 
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ndingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Stuart 
            
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Pearson - Royal Netherlands Institute for Sea Research - ORCID: 
40
Pearson - Royal Netherlands Institute for Sea Research - ORCID: 
            
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0000-0002-3986-4469\"}]",
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0000-0002-3986-4469\"}]",
            
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  "dates": 
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  "dates": 
            
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,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected 
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,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected 
            
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from: 15/08/2022 to: 15/08/2025 \"}]",
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from: 15/08/2022 to: 15/08/2025 \"}]",
            
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  "deposit_date": "2025-08-21",
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  "deposit_date": "2025-08-21",
            
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  "depositor": "Tjitske Kooistra (tjitske.kooistra@nioz.nl)",
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  "depositor": "Tjitske Kooistra (tjitske.kooistra@nioz.nl)",
            
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  "distribution_date": "2025-08-21",
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  "distribution_date": "2025-08-21",
            
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
49
  "distributor": "Research Data Management(NIOZ Royal Netherlands 
            
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Institute for Sea Research)",
50
Institute for Sea Research)",
            
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  "doi_date_published": "2025-11-13T11:04:43",
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  "doi_date_published": "2025-11-13T11:04:43",
            
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  "funding_references": 
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  "funding_references": 
            
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[{\"name\":\"NWO\",\"awardnumber\":\"17600\",\"awardtitle\":\"Tracking 
53
[{\"name\":\"NWO\",\"awardnumber\":\"17600\",\"awardtitle\":\"Tracking 
            
54
Ameland Inlet Living Lab Sediment (TRAILS)\",\"formatted\":\"NWO - 
54
Ameland Inlet Living Lab Sediment (TRAILS)\",\"formatted\":\"NWO - 
            
55
17600 - Tracking Ameland Inlet Living Lab Sediment 
55
17600 - Tracking Ameland Inlet Living Lab Sediment 
            
56
{\"name\":\"NWO\",\"awardnumber\":\"18035\",\"awardtitle\":\"Effective 
56
{\"name\":\"NWO\",\"awardnumber\":\"18035\",\"awardtitle\":\"Effective 
            
57
Upgrades and REtrofits for Coastal Climate Adaptation 
57
Upgrades and REtrofits for Coastal Climate Adaptation 
            
58
(EURECCA)\",\"formatted\":\"NWO - 18035 - Effective Upgrades and 
58
(EURECCA)\",\"formatted\":\"NWO - 18035 - Effective Upgrades and 
            
59
REtrofits for Coastal Climate Adaptation 
59
REtrofits for Coastal Climate Adaptation 
            
60
{\"name\":\"NWO\",\"awardnumber\":\"21026\",\"awardtitle\":\"Revealing 
60
{\"name\":\"NWO\",\"awardnumber\":\"21026\",\"awardtitle\":\"Revealing 
            
61
Hidden Networks of Coastal Sediment Pathways\",\"formatted\":\"NWO - 
61
Hidden Networks of Coastal Sediment Pathways\",\"formatted\":\"NWO - 
            
62
21026 - Revealing Hidden Networks of Coastal Sediment Pathways\"}]",
62
21026 - Revealing Hidden Networks of Coastal Sediment Pathways\"}]",
            
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  "groups": [],
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  "groups": [],
            
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  "id": "be230bb7-ff26-4fe6-b784-a153dc9645fc",
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  "id": "be230bb7-ff26-4fe6-b784-a153dc9645fc",
            
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  "isopen": false,
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  "isopen": false,
            
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  "license_title": null,
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  "license_title": null,
            
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  "maintainer": "Tjitske",
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  "maintainer": "Tjitske",
            
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  "maintainer_email": "tjitske.kooistra@nioz.nl",
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  "maintainer_email": "tjitske.kooistra@nioz.nl",
            
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  "metadata_created": "2025-11-28T16:05:00.664833",
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  "metadata_created": "2025-11-28T16:05:00.664833",
            
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  "metadata_modified": "2025-11-28T16:09:01.294816",
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  "metadata_modified": "2025-11-28T16:09:19.770232",
            
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  "name": 
71
  "name": 
            
72
-different-shapes-affect-current-driven-sand-transport-data-and-code",
72
-different-shapes-affect-current-driven-sand-transport-data-and-code",
            
73
  "notes": "This dataset and code belongs to the manuscript \"How 
73
  "notes": "This dataset and code belongs to the manuscript \"How 
            
74
Shells of Different Shapes Affect Current-driven Sand Transport\". 
74
Shells of Different Shapes Affect Current-driven Sand Transport\". 
            
75
\n\nThe seabed rarely consists solely of bare sand: often other 
75
\n\nThe seabed rarely consists solely of bare sand: often other 
            
76
materials, such as shells are present. They can influence sand 
76
materials, such as shells are present. They can influence sand 
            
77
transport by armouring the bed and modifying its roughness. Biogenic 
77
transport by armouring the bed and modifying its roughness. Biogenic 
            
78
shells come in different shapes and sizes, depending on the mollusc 
78
shells come in different shapes and sizes, depending on the mollusc 
            
79
species that produce them. To understand how changes in bivalve 
79
species that produce them. To understand how changes in bivalve 
            
80
species composition affect sediment transport, we need a mechanistic 
80
species composition affect sediment transport, we need a mechanistic 
            
81
understanding of how shell content and shell shape influence the 
81
understanding of how shell content and shell shape influence the 
            
82
near-bed flow and sand transport. We performed experiments in a 
82
near-bed flow and sand transport. We performed experiments in a 
            
83
racetrack flume, testing the effect of elongated (Ensis leei) versus 
83
racetrack flume, testing the effect of elongated (Ensis leei) versus 
            
84
rounded (Spisula subtruncata) shells on unidirectional current-driven 
84
rounded (Spisula subtruncata) shells on unidirectional current-driven 
            
85
sand transport. For both types of shells, a higher depth-averaged flow 
85
sand transport. For both types of shells, a higher depth-averaged flow 
            
86
velocity was needed for initiation of motion and a decrease in bedload 
86
velocity was needed for initiation of motion and a decrease in bedload 
            
87
transport of sand was found. At a shell content of 20%, the threshold 
87
transport of sand was found. At a shell content of 20%, the threshold 
            
88
of motion of sand increased up to 75%, and bedload transport was 
88
of motion of sand increased up to 75%, and bedload transport was 
            
89
reduced by up to 50%. These effects are explained by a balance between 
89
reduced by up to 50%. These effects are explained by a balance between 
            
90
roughness-induced turbulence and bed armouring. Compared to a bare 
90
roughness-induced turbulence and bed armouring. Compared to a bare 
            
91
bed, shells decreased bed roughness by reducing ripple formation; 
91
bed, shells decreased bed roughness by reducing ripple formation; 
            
92
rounded shells lowered roughness more than elongated shells, which 
92
rounded shells lowered roughness more than elongated shells, which 
            
93
formed roughness elements themselves, but also covered a larger 
93
formed roughness elements themselves, but also covered a larger 
            
94
fraction of the bed. However, there was no clear difference between 
94
fraction of the bed. However, there was no clear difference between 
            
95
round versus elongated shells on the overall sand transport; only 
95
round versus elongated shells on the overall sand transport; only 
            
96
shell content was key for the overall effect. Our results imply that 
96
shell content was key for the overall effect. Our results imply that 
            
97
sediment transport is likely overpredicted when a high number of 
97
sediment transport is likely overpredicted when a high number of 
            
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shells is present in the seabed.",
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shells is present in the seabed.",
            
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  "title": "How Shells of Different Shapes Affect Current-driven Sand 
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