Oceanologia最新文献_第6页

Generation and Assessment of ARGO Sea Surface Temperature Climatology for the Indian Ocean Region 印度洋地区ARGO海温气候学的生成和评估

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-04-01 DOI: 10.1016/j.oceano.2022.08.001

Ravi Kumar Jha, T.V.S. Udaya Bhaskar

{"title":"Generation and Assessment of ARGO Sea Surface Temperature Climatology for the Indian Ocean Region","authors":"Ravi Kumar Jha, T.V.S. Udaya Bhaskar","doi":"10.1016/j.oceano.2022.08.001","DOIUrl":"10.1016/j.oceano.2022.08.001","url":null,"abstract":"<div><p>ARGO program was conceived with an aim to generate near real-time ocean observations as the primary in-situ sources for use in operational oceanography studies. Two decades-long ARGO near-surface temperature data set was used for generating monthly gridded ARGO sea surface temperature (ASST) product on a climatological scale. Data interpolating variational analysis (DIVA) method was employed for generating the product with a spatial resolution of 0.25° x 0.25° for the Tropical Indian Ocean. This monthly ASST product was evaluated using five different climatological SST products derived from in-situ and satellite measurements. Various statistics such as BIAS, RMSE, coefficient of correlation, and skill scores were generated to evaluate the reliability of the ASST product. Further, the ASST product was validated with climatological in-situ SST obtained from RAMA and OMNI moorings deployed in the Indian Ocean. Statistical comparisons showed low BIAS and RMSE, and high correlation and skill scores with most of the buoys locations and the gridded SST products. Results concluded that the near-surface temperature data from ARGO can be used along with other SST data sets in the generation of high-resolution blended SST products.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 2","pages":"Pages 343-357"},"PeriodicalIF":2.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42094575","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}

引用次数: 0

Latitudinal and archipelago effect on the composition, distribution, and abundance of zooplanktonic organisms in the Gulf of California 纬度和群岛对加利福尼亚湾浮游动物生物组成、分布和丰度的影响

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-04-01 DOI: 10.1016/j.oceano.2022.11.001

Benjamín Quiroz-Martínez , David Alberto Salas-de-León , Antonio Gil-Zurita , María Adela Monreal-Gómez , Erik Coria-Monter , Elizabeth Durán-Campos

{"title":"Latitudinal and archipelago effect on the composition, distribution, and abundance of zooplanktonic organisms in the Gulf of California","authors":"Benjamín Quiroz-Martínez , David Alberto Salas-de-León , Antonio Gil-Zurita , María Adela Monreal-Gómez , Erik Coria-Monter , Elizabeth Durán-Campos","doi":"10.1016/j.oceano.2022.11.001","DOIUrl":"10.1016/j.oceano.2022.11.001","url":null,"abstract":"<div><p>The upper Gulf of California is one of the most energetic regions owing to its tidal range and strong tidal currents, making the upper gulf and the archipelago zone highly turbulent regions; the abundance of zooplankton should be associated with mixing phenomena. We aimed to determine the latitudinal distribution of zooplanktonic organisms in this region and the influence of the islands on their distribution and abundance using historical data. Distribution of abundance followed the current patterns, the archipelago influences abundance favorably but does not affect diversity. Latitudinal zooplankton richness had a quasi-parabolic shape. A decrease in richness was observed at 27.5°N, in the archipelago region, with maximum richness at 26.5°N and 28.5°N. The distribution of latitudinal ranges is consistent with geometric constraints models; taxa with wide ranges are in the central area, while those with narrow ranges are near the boundaries and the Upper Gulf. Zooplankton responds in some way to the existence of the southern boundary as shown by the decrease of richness in this region. At the whole scale of the Gulf, the distribution of richness followed geometric constraints model, while at smaller scales, distribution and abundance are conditioned by the hydrodynamics of the Gulf. We compared zooplankton spatial distribution with Sea Level Anomaly, Sea Surface Temperature, and Chlorophyll-<em>a</em> concentrations from Copernicus to establish relationships between these factors. We performed Cluster and Redundancy Analysis to characterize similarities between stations in terms of biomass and taxon composition and to assess the importance of environmental variables on the distribution of zooplankton.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 2","pages":"Pages 371-385"},"PeriodicalIF":2.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47661586","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}

引用次数: 2

Seasonal variation in size structure and production of autotrophic plankton community in eutrophied, low-light environment: A focus on Mesodinium rubrum 富营养化弱光环境下自养浮游生物群落大小、结构和产量的季节变化——以红藻为例

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-04-01 DOI: 10.1016/j.oceano.2022.11.003

Atis Labucis, Astra Labuce, Iveta Jurgensone, Ieva Barda, Ingrida Andersone, Anda Ikauniece

引用次数: 0

Extreme separations of bottle posts in the southern Baltic Sea – tentative interpretation of an experiment-of-opportunity 波罗的海南部瓶子柱的极端分离——对一次机会实验的试探性解释

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-04-01 DOI: 10.1016/j.oceano.2022.11.004

Ulrich Callies, Hans von Storch

引用次数: 0

A study of the seasonal and interannual variability of phytoplankton and zooplankton assemblages in a significant marine ecosystem 重要海洋生态系统中浮游植物和浮游动物组合的季节和年际变化研究

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-04-01 DOI: 10.1016/j.oceano.2022.12.003

Jochen Kämpf , Michelle Newman , Mark Doubell , Luciana Möller , Ryan Baring , Alex Shute , Ana Redondo Rodriguez

{"title":"A study of the seasonal and interannual variability of phytoplankton and zooplankton assemblages in a significant marine ecosystem","authors":"Jochen Kämpf , Michelle Newman , Mark Doubell , Luciana Möller , Ryan Baring , Alex Shute , Ana Redondo Rodriguez","doi":"10.1016/j.oceano.2022.12.003","DOIUrl":"10.1016/j.oceano.2022.12.003","url":null,"abstract":"<div><p>The eastern Great Australian Bight (GAB) is a significant marine ecosystem, featuring a range of marine mammals and large pelagic fish including blue whales, sharks and tuna. Previous research has classified the region as generally oligotrophic, apart from late austral summer months when seasonal upwelling triggers phytoplankton blooms in the region. Based on multi-year field observations, this study analysed the interannual and interdecadal variability of the plankton community structure in this region. Pigment data indicate that nano- and pico-phytoplankton generally dominated the phytoplankton community structure with averages of 39% and 30% of the total biomass, including a relatively large proportion of nanophytoplankton (cryptophytes, haptophytes and prasinophytes) with cell sizes <5 µm, not resolved in microscopic cell counts. Nano- and pico-phytoplankton alone contributed ∼0.3 mg/m<sup>3</sup> to the chlorophyll-<em>a</em> signal and therefore sustained an overall mesotrophic environment year-round. Distinct diatom blooms developed during the upwelling season within concentrated subsurface layers where chlorophyll-<em>a</em> concentrations increased to >1 mg/m<sup>3</sup>, characterising eutrophic conditions. The biomass of diatoms increased from <10% to ∼30% of total biomass. Diatom blooms coincided with relatively high abundances of three dominant zooplankton species (<em>Oithona similis, Penilia avirostris</em> and <em>Microsetella norvegica</em>) and/or the dinophyta <em>Noctiluca scintillans</em>, but events of high zooplankton abundance also occurred outside the upwelling season. The observational findings also show the occurrence of significant subsurface phytoplankton blooms in late spring, not reported before, that may also contribute to the ecosystem functioning of the region.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 2","pages":"Pages 434-451"},"PeriodicalIF":2.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49396016","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}

引用次数: 0

Long-term precipitation events in the eastern part of the Baltic Sea region 波罗的海东部地区的长期降水事件

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-01-01 DOI: 10.1016/j.oceano.2022.02.003

Viktorija Mačiulytė (Viktorija Maciulyte) , Egidijus Rimkus , Donatas Valiukas , Edvinas Stonevičius (Edvinas Stonevicius)

{"title":"Long-term precipitation events in the eastern part of the Baltic Sea region","authors":"Viktorija Mačiulytė (Viktorija Maciulyte) , Egidijus Rimkus , Donatas Valiukas , Edvinas Stonevičius (Edvinas Stonevicius)","doi":"10.1016/j.oceano.2022.02.003","DOIUrl":"10.1016/j.oceano.2022.02.003","url":null,"abstract":"<div><p>Precipitation anomalies have a significant impact on both natural environmental and human activity. Long lasting drought analysis has received great attention on a global and regional scale while prolonged rainy periods so far have been much less studied. However, long-term precipitation events are also important and threatening. The situation around the Baltic Sea in 2017 revealed that such periods could cause significant losses in agriculture.</p><p>The rainy periods of 30, 60, and 90 consecutive days in a given year during which the maximum precipitation amount was recorded in the eastern part of the Baltic Sea region were analysed in this study. Daily precipitation amount data from the E-OBS gridded dataset was used. The investigation covered a period from 1950 to 2019. The changes in magnitude and timing of such rainy periods were evaluated.</p><p>It was found that the annual precipitation in the eastern part of the Baltic Sea region increased significantly during the analysed period. Positive changes were observed throughout the year except during April and September. The amounts of precipitation during rainy periods of different duration also increased in most of the investigated areas but changes were mostly insignificant. Consequently, a decrease in the ratio of precipitation amount during the rainy period to annual precipitation was observed. It was also found that the rainy periods occurred earlier, especially in the case of the rainy periods of 60- and 90-days durations. Such tendencies pose an increasing threat to agriculture.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 1","pages":"Pages 141-150"},"PeriodicalIF":2.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46703789","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}

引用次数: 1

How to develop an understanding of the marginal sea system by connecting natural and human sciences 如何通过连接自然科学和人文科学来发展对边缘海洋系统的理解

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-01-01 DOI: 10.1016/j.oceano.2021.06.003

Anders Omstedt

{"title":"How to develop an understanding of the marginal sea system by connecting natural and human sciences","authors":"Anders Omstedt","doi":"10.1016/j.oceano.2021.06.003","DOIUrl":"10.1016/j.oceano.2021.06.003","url":null,"abstract":"<div><p>The marginal seas are in the transition zone between land and ocean and are often subject to extensive human activities causing multiple stresses on the marine environment and its ecosystems. A large gap between our scientific knowledge and our treatment of the sea illustrates a weak coupling between facts and values. The aim of this work is to initiate a discussion of how to improve the human relationship with the sea. Research into the UN 2030 Agenda with its ambition to transform our world into a sustainable and healthy physical and mental environment creates an opportunity to deepen our understanding of human behaviour and values and how they impinge on the physical world. Together with improved communication and transdisciplinary initiatives, these efforts should be vital in better understanding the marginal sea system and generating a new relationship with the ocean.</p><p>There is a pressing need to change the human relationship with the ocean and its marginal seas. Connecting the natural and human sciences can improve our awareness of the sea's state and support behavioural change. Such transdisciplinary development requires training in broad thinking and communication. It is time for natural science to “open the human black box”, adding values to facts.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 1","pages":"Pages 20-29"},"PeriodicalIF":2.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.oceano.2021.06.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41268068","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}

引用次数: 5

Earth system changes in marginal seas 边缘海域的地球系统变化

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-01-01 DOI: 10.1016/j.oceano.2023.01.001

Marcus Reckermann (Guest Editor), Jan Harff (Guest Editor), H.E. Markus Meier (Guest Editor), Karol Kuliński (Guest Editor), Hans von Storch (Guest Editor)

引用次数: 1

Relative sea-level changes induced by glacial isostatic adjustment and sediment loads in the Beibu Gulf, South China Sea 冰川均衡调整引起的南海北部湾相对海平面变化及输沙量

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-01-01 DOI: 10.1016/j.oceano.2022.09.001

Andreas Groh , Jan Harff

{"title":"Relative sea-level changes induced by glacial isostatic adjustment and sediment loads in the Beibu Gulf, South China Sea","authors":"Andreas Groh , Jan Harff","doi":"10.1016/j.oceano.2022.09.001","DOIUrl":"10.1016/j.oceano.2022.09.001","url":null,"abstract":"<div><p>We modelled changes in relative sea level (RSL) in the Beibu Gulf region, South China Sea, caused by the melting of the Pleistocene ice sheets, i.e., glacial isostatic adjustment (GIA). Both the temporal evolution of RSL between the last glacial maximum and present day as well as present-day rates were derived. The interplay of changing ocean water volume, gravitational induced water redistribution and solid Earth deformations due to the varying surface loads is accounted for by means of the sea-level equation. The modelled RSL curves for the Beibu Gulf region reveal the shape typical for regions far away from the former centres of glaciation, exhibiting a pronounced Holocene sea-level highstand between 4 and 5 kyr before the present. A general good agreement was found between modelled and empirical RSL curves, although differences in the timing and magnitude of the highstand were revealed. In addition to GIA-induced RSL, we also modelled the effect of RSL variations due to sediment accumulation during marine isotopic stages MIS 4 to MIS 1 descending mainly from Hainan Island, but also other terrestrial sources from the Chinese (and Vietnamese) mainland. Estimates for the sediment loading originate from seismic surveys and dated sediment cores. We found that RSL changes caused by sediment loading are at least three orders of magnitude smaller than those induced by GIA. The present-day rates of both RSL effects are too small to be detectable by geodetic observations and cannot be discriminated from prominent tectonic signals.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":"65 1","pages":"Pages 249-259"},"PeriodicalIF":2.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45405273","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}

引用次数: 0

Rapid sea-level rise during the first phase of the Littorina transgression in the western Baltic Sea 波罗的海西部利托里纳海侵第一阶段海平面快速上升

IF 2.9 3区地球科学

Oceanologia Pub Date : 2023-01-01 DOI: 10.1016/j.oceano.2022.05.001

Karl Stattegger, Karolina Leszczyńska

引用次数: 4