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Mixing of North Pacific water masses in the Bali Sea
As part of the Indonesian Throughflow (ITF) from western route, water masses in the Bali Sea are fed by North Pacific water masses. We examined the mixing strength in the Bali Sea which contributes to reducing the core layer S-max of the North Pacific Subtropical Water (NPSW) from 34. 8 – 35 psu in...
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| Published in: | BIO web of conferences 2024-01, Vol.106, p.3003 |
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| Language: | English |
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| creator | Pandapotan, Andreas Naulita, Yuli Hernawan, Undang |
| description | As part of the Indonesian Throughflow (ITF) from western route, water masses in the Bali Sea are fed by North Pacific water masses. We examined the mixing strength in the Bali Sea which contributes to reducing the core layer S-max of the North Pacific Subtropical Water (NPSW) from 34. 8 – 35 psu in the source region to 34.5 psu in the Bali Sea. Using Thorpe method, we found the mixing strength in the Bali Sea is relatively low. The turbulent kinetic energy dissipation rate (ɛ) of O( 10
-11
- 10
-6
) WKg
-1
and density turbulent diffusivity (Kρ) are O (10
-5
10
-3
) m
-2
s
-1
were similar to typical open ocean values. However, mixing in the eastern region of the Bali Sea is relatively stronger than in the western region. Based on the critical Ri #, we found the Thorpe scale (LT) under Ri# < 0.25 in the eastern region, which is contrary to other parts. It indicated the turbulent mixing was dominantly caused by shear instability. Shear from the strong outflow of ITF towards the Lombok Strait and the reversal northward current in the lower layer forces a strong turbulent layer. |
| doi_str_mv | 10.1051/bioconf/202410603003 |
| format | article |
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-11
- 10
-6
) WKg
-1
and density turbulent diffusivity (Kρ) are O (10
-5
10
-3
) m
-2
s
-1
were similar to typical open ocean values. However, mixing in the eastern region of the Bali Sea is relatively stronger than in the western region. Based on the critical Ri #, we found the Thorpe scale (LT) under Ri# < 0.25 in the eastern region, which is contrary to other parts. It indicated the turbulent mixing was dominantly caused by shear instability. Shear from the strong outflow of ITF towards the Lombok Strait and the reversal northward current in the lower layer forces a strong turbulent layer.</description><identifier>ISSN: 2117-4458</identifier><identifier>EISSN: 2117-4458</identifier><identifier>DOI: 10.1051/bioconf/202410603003</identifier><language>eng</language><publisher>EDP Sciences</publisher><ispartof>BIO web of conferences, 2024-01, Vol.106, p.3003</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2273-c0675c3b694fddc33f632dcedf7b8726470f1adeaa4739a760369c2b8435e22c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><contributor>Manik, H.M.</contributor><contributor>Lumban Gaol, J.</contributor><contributor>Atmadipoera, A.S.</contributor><contributor>Osawa, T.</contributor><contributor>Zamani, N.P.</contributor><contributor>Meng Chuan, O.</contributor><creatorcontrib>Pandapotan, Andreas</creatorcontrib><creatorcontrib>Naulita, Yuli</creatorcontrib><creatorcontrib>Hernawan, Undang</creatorcontrib><title>Mixing of North Pacific water masses in the Bali Sea</title><title>BIO web of conferences</title><description>As part of the Indonesian Throughflow (ITF) from western route, water masses in the Bali Sea are fed by North Pacific water masses. We examined the mixing strength in the Bali Sea which contributes to reducing the core layer S-max of the North Pacific Subtropical Water (NPSW) from 34. 8 – 35 psu in the source region to 34.5 psu in the Bali Sea. Using Thorpe method, we found the mixing strength in the Bali Sea is relatively low. The turbulent kinetic energy dissipation rate (ɛ) of O( 10
-11
- 10
-6
) WKg
-1
and density turbulent diffusivity (Kρ) are O (10
-5
10
-3
) m
-2
s
-1
were similar to typical open ocean values. However, mixing in the eastern region of the Bali Sea is relatively stronger than in the western region. Based on the critical Ri #, we found the Thorpe scale (LT) under Ri# < 0.25 in the eastern region, which is contrary to other parts. It indicated the turbulent mixing was dominantly caused by shear instability. Shear from the strong outflow of ITF towards the Lombok Strait and the reversal northward current in the lower layer forces a strong turbulent layer.</description><issn>2117-4458</issn><issn>2117-4458</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNpNkNtKAzEURYMoWGr_wIf8QO3JZZKZRy1eCvUC6nM4cyZpU9pGkgH17622SM_LPuyHxWYxdingSkAlJm1MlLZhIkFqAQYUgDphAymEHWtd1adH_zkblbKC3TVCga0GTD_Gr7hd8BT4U8r9kr8gxRCJf2LvM99gKb7wuOX90vMbXEf-6vGCnQVcFz865JC9392-TR_G8-f72fR6PiYprRoTGFuRak2jQ9eRUsEo2ZHvgm1rK422EAR2HlFb1aDdbTcNybbWqvJSkhqy2Z7bJVy5jxw3mL9dwuj-ipQXDnMfae1do31lQxAetNDCErZ1Qw1gXZOCypgdS-9ZlFMp2Yd_ngD3K9IdRLpjkeoH3Kxlfg</recordid><startdate>20240101</startdate><enddate>20240101</enddate><creator>Pandapotan, Andreas</creator><creator>Naulita, Yuli</creator><creator>Hernawan, Undang</creator><general>EDP Sciences</general><scope>AAYXX</scope><scope>CITATION</scope><scope>DOA</scope></search><sort><creationdate>20240101</creationdate><title>Mixing of North Pacific water masses in the Bali Sea</title><author>Pandapotan, Andreas ; Naulita, Yuli ; Hernawan, Undang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2273-c0675c3b694fddc33f632dcedf7b8726470f1adeaa4739a760369c2b8435e22c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pandapotan, Andreas</creatorcontrib><creatorcontrib>Naulita, Yuli</creatorcontrib><creatorcontrib>Hernawan, Undang</creatorcontrib><collection>CrossRef</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>BIO web of conferences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pandapotan, Andreas</au><au>Naulita, Yuli</au><au>Hernawan, Undang</au><au>Manik, H.M.</au><au>Lumban Gaol, J.</au><au>Atmadipoera, A.S.</au><au>Osawa, T.</au><au>Zamani, N.P.</au><au>Meng Chuan, O.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mixing of North Pacific water masses in the Bali Sea</atitle><jtitle>BIO web of conferences</jtitle><date>2024-01-01</date><risdate>2024</risdate><volume>106</volume><spage>3003</spage><pages>3003-</pages><issn>2117-4458</issn><eissn>2117-4458</eissn><abstract>As part of the Indonesian Throughflow (ITF) from western route, water masses in the Bali Sea are fed by North Pacific water masses. We examined the mixing strength in the Bali Sea which contributes to reducing the core layer S-max of the North Pacific Subtropical Water (NPSW) from 34. 8 – 35 psu in the source region to 34.5 psu in the Bali Sea. Using Thorpe method, we found the mixing strength in the Bali Sea is relatively low. The turbulent kinetic energy dissipation rate (ɛ) of O( 10
-11
- 10
-6
) WKg
-1
and density turbulent diffusivity (Kρ) are O (10
-5
10
-3
) m
-2
s
-1
were similar to typical open ocean values. However, mixing in the eastern region of the Bali Sea is relatively stronger than in the western region. Based on the critical Ri #, we found the Thorpe scale (LT) under Ri# < 0.25 in the eastern region, which is contrary to other parts. It indicated the turbulent mixing was dominantly caused by shear instability. Shear from the strong outflow of ITF towards the Lombok Strait and the reversal northward current in the lower layer forces a strong turbulent layer.</abstract><pub>EDP Sciences</pub><doi>10.1051/bioconf/202410603003</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | BIO web of conferences, 2024-01, Vol.106, p.3003 |
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| language | eng |
| recordid | cdi_doaj_primary_oai_doaj_org_article_94e57ff1e041417cab89c90a88c30566 |
| source | Publicly Available Content Database |
| title | Mixing of North Pacific water masses in the Bali Sea |
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