Deep-sea Research Part Ii-topical Studies in Oceanography最新文献

{"title":"Phytoplankton community composition in the oligotrophic Argo Basin of the eastern Indian Ocean","authors":"Karen E. Selph ,&nbsp;Robert H. Lampe ,&nbsp;Natalia Yingling ,&nbsp;Ria Bhabu ,&nbsp;Sven A. Kranz ,&nbsp;Andrew E. Allen ,&nbsp;Michael R. Landry","doi":"10.1016/j.dsr2.2026.105602","DOIUrl":"10.1016/j.dsr2.2026.105602","url":null,"abstract":"<div><div>Phytoplankton, the foundational organisms in ocean food webs, have been little studied in the Indonesian Throughflow region of the eastern Indian Ocean, the spawning area of Southern Bluefin Tuna. Here, we assess phytoplankton abundance, biomass, size structure, pigment composition, taxonomic diversity and percent functional mixotrophs of that region based on complementary approaches of flow cytometry, microscopy, taxon-specific pigments and rRNA gene sequencing. During summer (January–February) 2022, the region was characterized by warm (up to 30.5 °C), stratified, oligotrophic (nitrogen-limited) waters, with integrated euphotic zone (EZ) chlorophyll <em>a</em> (CHL<em>a</em>) of 13 mg m⁻². EZ mean CHL<em>a</em> was low in the upper layer (85 ng L⁻¹) and 3.8 times higher (320 ng L⁻¹) at the pronounced deep CHL<em>a</em> maximum. EZ-integrated phytoplankton carbon averaged 1229 mg C m⁻². <em>Prochlorococcus</em> dominated throughout the EZ, but eukaryotic carbon biomass was ∼4-times greater in the lower than upper EZ, along with a distinct community. In the upper EZ, haptophytes, dinoflagellates and prasinophycean taxa without prasinoxanthin contributed most to monovinyl chlorophyll <em>a</em> (MV-CHL<em>a</em>). In the more diverse lower EZ, haptophytes, dinoflagellates, prasinophycean taxa with prasinoxanthin, pelagophytes, and cryptophytes were the main contributors to MV-CHL<em>a</em>. Diatoms were a minor part of the community. A higher percentage of the upper EZ community showed mixotrophy (35–84%) relative to the lower EZ (30–51%). Nitrogen-fixing organisms (as symbionts of diatoms and free-living cyanobacteria taxa) were ubiquitous, but low in abundance. Overall, community characteristics were similar to those at the Hawaii Ocean Time-series site and the central Gulf of Mexico.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105602"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hotspots in the heat: Bayesian spatial modeling of Southern Bluefin Tuna larvae in a warming Argo Basin","authors":"M. Grazia Pennino ,&nbsp;Barbara A. Muhling ,&nbsp;Estrella Malca ,&nbsp;Raúl Laiz-Carrión ,&nbsp;José María Quintanilla ,&nbsp;Ricardo Borrego-Santos ,&nbsp;Manuel Vargas-Yañez ,&nbsp;Francisco Abascal ,&nbsp;Lynnath E. Beckley ,&nbsp;Michael R. Landry","doi":"10.1016/j.dsr2.2026.105605","DOIUrl":"10.1016/j.dsr2.2026.105605","url":null,"abstract":"<div><div>The Argo Basin, located in the eastern Indian Ocean off northwestern Australia, is the primary spawning ground for Southern Bluefin Tuna (<em>Thunnus maccoyii</em>). Understanding the environmental drivers of larval distribution in this region is essential to anticipate potential climate impacts. Using data from the BLOOFINZ cruise, we applied spatially explicit Bayesian models with Tweedie likelihoods to evaluate the influence of sea surface temperature, sea level anomaly, sea surface salinity, chlorophyll-a concentration, bathymetry, and seabed aspect on larval density (density standardized by filtered volume). The best-supported model revealed strong nonlinear responses to temperature, mesoscale activity, and depth. Larval density increased with warmer surface waters, peaked at intermediate depths, and was highest under moderate sea level anomalies, suggesting that retention and feeding conditions are maximized under these circumstances. Seabed aspect had a negative effect, consistent with topography-flow interactions that can reduce retention. The spatial component of the model identified a hotspot of larval density in the southern–southwestern basin and lower density toward the north, with lowest uncertainty in well-sampled central areas. Projections for 2050 under a mid-range climate scenario indicated a heterogeneous redistribution of suitable larval habitat, with declines in central and southeastern spawning areas and increases toward the northeast. These findings highlight the sensitivity of Southern Bluefin Tuna larvae to oceanographic conditions and climate change, and they emphasize the need for adaptive, climate-informed management of spawning habitats.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105605"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decadal spatial trends in the feeding-type composition of Arctic deep-sea nematodes at LTER-HAUSGARTEN: A dual classification approach","authors":"Jannik Schnier ,&nbsp;Christiane Hasemann","doi":"10.1016/j.dsr2.2026.105601","DOIUrl":"10.1016/j.dsr2.2026.105601","url":null,"abstract":"<div><div>This study examined functional changes in free-living meiobenthic nematode communities across different water depths and sediment layers over a 20-year period along a bathymetric transect at LTER observatory HAUSGARTEN in the Fram Strait (1200 m, 2500 m, and 4000 m). The focus was on changes in feeding type composition and comparing the performance two different classification systems (Wieser's and Hodda's) to assess whether they yield consistent functional interpretations or highlight differences.</div><div>Published datasets were used to analyse nematode communities, with specimens identified morphologically to the lowest possible taxonomic level and assigned to feeding types. The study investigated how the trophic structure of nematode communities varied over time, with depth, and between sediment layers, aiming to reveal long-term spatio-temporal patterns at HAUSGARTEN.</div><div>Microbial feeding nematodes were consistently dominant across all stations and years. While feeding type composition changed significantly over time at each respective station and to a similar strength with water depth, sediment layer had a stronger influence than the temporal variation. Interannual variation of feeding types as well as within-group dissimilarity and dispersion were lowest at the shallowest station and increased with water depth. Similarly, feeding-type composition in the uppermost sediment layer remained most stable over the years and was gradually decreasing with sediment depth. Despite a decline in nematode abundances over time, the overall feeding type composition remained unchanged. Both classification systems produced comparable results, indicating that functional interpretations of nematode communities are robust across classification approaches.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105601"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An eastward branch of the east India coastal current off Sri Lanka: Dynamics, formation mechanisms, and impacts on Bay of Bengal salinity variability","authors":"W.G. Indunil Tharaka Gunathilaka ,&nbsp;JayarathnaW.N.D. Sandaruwan ,&nbsp;Wang Tianyu ,&nbsp;Yan Du","doi":"10.1016/j.dsr2.2025.105588","DOIUrl":"10.1016/j.dsr2.2025.105588","url":null,"abstract":"<div><div>The East India Coastal Current (EICC) flows equatorward during early boreal winter, transporting low–salinity Bay of Bengal (BOB) waters southward along the Indian eastern coast. Using satellite measurements, in–situ observations, and ocean model data, we identify a recurrent eastward current (EC) that splits from the EICC off the eastern coast of Sri Lanka. While a weaker branch of the EICC continues equatorward along the coast, a section of rest flow diverts northeastward into the BOB as the EC, indicating a gyre structure in the northwest of BOB. Analysis of 28 years of data (1993–2020) reveals eight distinct EC events, occurring primarily during neutral Indian Ocean dipole years. These events are dynamically forced by two types of eddies, a westward–propagating anticyclonic eddy, linked to downwelling Rossby waves, impinging on the south eastern coast of Sri Lanka, while a cyclonic eddy forms to the north. These events are supported by the following coastal–trapped downwelling Kelvin wave, with the current appearing with increasing frequency over time. The EC, lasting about one-two weeks, exhibits a velocity of 0.3–0.5 m/s and transport flow volume ranging from 0.15 to 0.54 Sv. Despite its brief duration, EC plays a critical role in exporting low–salinity waters (&lt;33 PSU) from Sri Lanka's eastern coast and subsequently transporting high–salinity central BOB waters toward the inner bay. By regulating EICC low–salinity water intrusion, the EC produces distinct freshening effects along Sri Lanka's eastern coast during active years, highlighting its important role in controlling western BOB freshwater distribution patterns.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105588"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145963085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial and chemical signatures of melting sea-ice: export of bacteria, microeukaryotes, and molecules","authors":"Magda G. Cardozo-Mino ,&nbsp;Julian Merder ,&nbsp;Thorsten Dittmar ,&nbsp;Antje Boetius ,&nbsp;Matthias Wietz","doi":"10.1016/j.dsr2.2026.105607","DOIUrl":"10.1016/j.dsr2.2026.105607","url":null,"abstract":"<div><div>Sea-ice loss in the warming Arctic Ocean profoundly affects microbial communities and biogeochemical cycles. Here, we performed a microcosm experiment with sea-ice and seawater from the Fram Strait to identify microbial and chemical signatures of melting ice and the surrounding seawater. Amplicon sequencing across 49 h of incubation showed that approximately one-tenth of bacterial and microeukaryotic taxa were directly traceable between the original ice and meltwater. Exported microbes included diatoms (for example <em>Attheya</em>, <em>Navicula</em>, <em>Bacillaria</em>), heterotrophic protists (for example <em>Pelagophyceae</em>, MAST-12B, <em>Thoracosphaeraceae</em>), and bacteria (for example <em>Psychroflexus</em>, <em>Taeseokella</em>, <em>Lewinella</em>). Size-fractionated filtration showed that mostly larger cells and aggregates, including chytrid fungi and biofilm-forming bacteria, seeded the meltwater microbiome. FT-ICR-MS revealed a prevalence of aliphatic and sulfuric molecular formulae in the original sea-ice. Of the 128 formulae unique to sea-ice, 10 were subsequently detected in meltwater. Up to 26% of organic molecules in sea-ice were shared with other Arctic datasets, indicating pan-Arctic patterns in sea-ice chemistry. Together, the finding of distinct 'ice signatures' in meltwater illustrates microbial and chemical connectivity between these habitats, with implications for the biological carbon pump and cryobenthopelagic coupling.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105607"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zooplankton trophic processes in the eastern Indian Ocean off northwest Australia","authors":"Moira Décima ,&nbsp;Rasmus Swalethorp ,&nbsp;Grace F. Cawley ,&nbsp;Claudia Traboni ,&nbsp;Claire H. Davies ,&nbsp;Michael R. Landry","doi":"10.1016/j.dsr2.2026.105592","DOIUrl":"10.1016/j.dsr2.2026.105592","url":null,"abstract":"<div><div>The region off northwestern Australia in the eastern Indian Ocean is an oligotrophic open-ocean ecosystem characterized by low nutrients and high stratification, and is the only known spawning ground for Southern Bluefin Tuna (SBT). We conducted four multi-day Lagrangian experiments (cycles) and transect sampling to investigate plankton trophic flows during the peak SBT spawning season (Jan–Feb 2022). These cycles were carried out after recent storm mixing and subsequent warming and stratification of the water column. We quantified mesozooplankton size-fractionated biomass and grazing, targeting processes that coincide with SBT larval habitat (upper 30 m) and the full euphotic zone (150 m). Higher grazing occurred in the upper 30 m at the start of our study, coinciding with the deeper mixed layer. Euphotic-zone integrated grazing peaked later, coinciding with higher stratification and increased abundance of diatoms at depth. Mesozooplankton grazing impact averaged 0.11 ± 0.01 d^-1 for the region, equivalent to 21.2 % of phytoplankton growth. Combined with microzooplankton grazing removals, phytoplankton growth and total zooplankton grazing losses were approximately in balance for the euphotic zone. While direct consumption of phytoplankton only supported respiratory needs of a portion of the assemblage in two of the four experimental cycles, respiratory and production needs were largely met by including the consumption of microzooplankton production. Thus, the production of mesozooplankton prey required to sustain SBT larvae in this nutrient-poor environment was obtained by both high grazing and efficient trophic coupling. This study highlights the role of metazoan zooplankton in warm oligotrophic waters of the eastern tropical Indian Ocean, and indicates that efficient ecosystem transfer can be achieved even under conditions assumed to severely limit production and biomass accumulation.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105592"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More than co-occurrence: what amplicon time series data can tell us","authors":"Ellen Oldenburg ,&nbsp;Nima P. Saadat ,&nbsp;Sofie Thielen ,&nbsp;Ovidiu Popa","doi":"10.1016/j.dsr2.2026.105599","DOIUrl":"10.1016/j.dsr2.2026.105599","url":null,"abstract":"<div><div>The Arctic Ocean is undergoing unprecedented transformations due to climate change, with rising temperatures, shrinking sea ice, and shifting oceanographic conditions reshaping its ecosystem. At the center of these changes lie the Arctic's microbial communities that drive biogeochemical cycles, sustain primary production, and maintain ecosystem stability. Long-term ecological research is essential for understanding microbial community dynamics and their role in biogeochemical cycles, particularly in polar ecosystems. The HAUSGARTEN observatory, established in 1999, has provided unparalleled insights into Arctic marine microbial ecology. This review synthesizes 25 years of microbial re-search at HAUSGARTEN, revealing how advanced methodologies—such as amplicon sequencing, which has revolutionized microbial ecology by enabling the taxonomic characterization of complex communities through targeted marker genes, Fourier decomposition, Convergent Cross Mapping (CCM), and Energy Landscape Analysis (ELA)—have revolutionized our understanding of Arctic microbial ecology. By integrating time-series data with network-based approaches, we move beyond static snapshots to uncover the hidden rhythms of microbial life, from seasonal successions to long-term trends. We explore the interplay between environmental drivers and microbial community structure, emphasizing seasonal succession, functional adaptations, and the impact of Atlantification. Environmental conditions are constantly changing; therefore, there is a need for predictive models. By combining machine learning, deterministic modeling, and ecological theory, we are now poised to forecast how microbial communities will respond to future climate scenarios. From Graph Neural Networks (GNNs) to ARIMA forecasting, this review showcases the power of amplicon data in a time series frame work together with interdisciplinary approaches to tackle one of the most pressing challenges of our time. Arctic microbial communities are the key to understanding and mitigating the impacts of climate change, and this review is a guide to unlocking their secrets.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105599"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective feeding of southern Bluefin Tuna (Thunnus maccoyii) larvae on appendicularians in their eastern Indian Ocean spawning region","authors":"Rasmus Swalethorp ,&nbsp;Estrella Malca ,&nbsp;Akihiro Shiroza ,&nbsp;Lindsey Kim ,&nbsp;Moira Decima ,&nbsp;José M. Quintanilla ,&nbsp;Ricardo Borrego-Santos ,&nbsp;Claire H. Davies ,&nbsp;David Die ,&nbsp;Lynnath E. Beckley ,&nbsp;Claudia Traboni ,&nbsp;Grace F. Cawley ,&nbsp;Kamran Walsh ,&nbsp;Michael R. Landry ,&nbsp;Raúl Laiz-Carrión","doi":"10.1016/j.dsr2.2026.105591","DOIUrl":"10.1016/j.dsr2.2026.105591","url":null,"abstract":"<div><div>We investigated ontogenetic variability in feeding and prey selection by Southern Bluefin Tuna larvae (SBT; <em>Thunnus maccoyii</em>) in their only global spawning region, located in the eastern Indian Ocean between northwestern Australia and Indonesia. Zooplankton prey and SBT larvae were sampled during four multi-day Lagrangian experiments conducted in the southern Argo Basin during the peak midsummer spawning season in January–February 2022. The zooplankton were identified, enumerated, sizes measured, and their developmental stages ascertained both <em>in situ</em> and from the stomach contents of the larvae. Larval stomach contents revealed high feeding incidence of 95 % with at least one prey item ingested with an average of 3.9 zooplankton prey per larva. Diet and prey selection transitioned during larval ontogeny from copepod nauplii to calanoid and corycaeid copepodites, and ultimately to cladocerans, as well as fish larvae when these were available. However, for all developmental stages and experiments, appendicularians stood out as the most significant prey taxon, constituting an average of 57 % of prey carbon biomass consumed and up to 79 % for postflexion stages. We observed some indication of increasing selection for appendicularians and fish larvae where they were most abundant, even when other suitable prey items were more readily available. Our study documents unprecedented high feeding incidence and positive selection for appendicularians compared to previous investigations of bluefin species, highlighting a pathway that enhances food web transfer efficiency. Appendicularians are uniquely able to thrive in oligotrophic environments and could be an optimal food source supporting SBT larvae in the future ocean.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105591"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and spatial variability of marine nepheloid layers in the deep South China Sea","authors":"Zhuangcai Tian ,&nbsp;Xiujun Guo ,&nbsp;Jinjian Huang ,&nbsp;Chao Xu ,&nbsp;Lei Song ,&nbsp;Jianhua Yue","doi":"10.1016/j.dsr2.2026.105600","DOIUrl":"10.1016/j.dsr2.2026.105600","url":null,"abstract":"<div><div>Marine nepheloid layers are extensively distributed across the world's oceans and marginal seas, characterized by significantly high turbidity compared to adjacent layers. In this study, we measured four transects located at 6°N, 10°N, 18°N, and 113°E in the South China Sea (SCS), encompassing a total of 75 CTD stations each year, and conducted four sets of repeated measurements over a four-year period. Our findings indicate that the scale and concentration of Bottom Nepheloid Layer (BNL) and Intermediate Nepheloid Layer (INL) vary significantly across different subbasins and seasons. In the southwestern and northwestern subbasin of the SCS, BNL and multiple INLs persist year-round at different water depths. BNL is commonly observed on the continental slope with the INLs extending along the isopycnals, and both BNL and INLs always are stronger in summer. High turbidity has caused marked alterations in the isopycnal and isotherm structures of the water column, particularly near the slope. In the central basin of the SCS, multiple INLs also persist year-round, especially at water depths 400–1000 m. The changes in the water column by high turbidity in the central basin were weaker. The persistent presence of INLs indicates ongoing transport of particulate matter across the slope. Ocean currents and internal waves predominantly affect the slopes of the southwestern and northwestern subbasins, while the deeper central basin is primarily affected by the ocean currents. The interactions between internal waves or ocean currents and submarine topography contribute to the frequent occurrence of BNL and INLs around the seamounts. This paper aimed to provide a comprehensive analysis of the seasonal and spatial variability of BNLs and INLs in the deep SCS, serving as a reference for future research on the dynamic processes of marine ecological environment and associated source-sink systems.</div></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105600"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Second International Indian Ocean Expedition (IIOE-2): Motivating new exploration in a poorly understood ocean basin (volume 7)","authors":"Raleigh R. Hood ,&nbsp;Lynnath E. Beckley ,&nbsp;V.V.S.S. Sarma ,&nbsp;P.N. Vinayachandran","doi":"10.1016/j.dsr2.2025.105566","DOIUrl":"10.1016/j.dsr2.2025.105566","url":null,"abstract":"","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"226 ","pages":"Article 105566"},"PeriodicalIF":3.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}