Deep-Sea Research Part I-Oceanographic Research Papers最新文献

筛选
英文 中文
Determination of vanadium redox species V(IV) and V(V) in seawater using chelating resin and inductively coupled plasma mass spectrometry 利用螯合树脂和电感耦合等离子体质谱法测定海水中的氧化还原钒V(IV)和V(V)
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-02-08 DOI: 10.1016/j.dsr.2024.104261
Erika Kurahashi, Sandra Poehle, Andrea Koschinsky
{"title":"Determination of vanadium redox species V(IV) and V(V) in seawater using chelating resin and inductively coupled plasma mass spectrometry","authors":"Erika Kurahashi,&nbsp;Sandra Poehle,&nbsp;Andrea Koschinsky","doi":"10.1016/j.dsr.2024.104261","DOIUrl":"10.1016/j.dsr.2024.104261","url":null,"abstract":"<div><p>An improved off-line separation method of vanadium redox species V(V) and V(IV) in seawater using a solid phase extraction with chelating resin Chelex-100 was developed. Column shape, eluting solution, elution volume, pH of sample, and flow rate were tested and optimized to establish a simple offline separation method. Analyses with inductively coupled plasma mass spectrometry (ICP-MS) combining with a Kinetic Energy Discrimination mode (KED) using helium gas achieved precise determination of vanadium redox species in saline matrix solutions. Average recovery of solutions doped with both V(V) and V(IV) was 92% for V(V) and 96% for V(IV). The method detection limit was 0.87 nmol/kg for V(V) and 0.47 nmol/kg for V(IV) obtained from 0.6 mol/kg NaCl solution. Stability tests of redox species V(IV) in seawater with/without an aerobic chamber revealed that V(IV) species were preserved in seawater for over 24 h and possibly further 14 days in normal oxidizing atmosphere. We developed a method that does not require pH adjustment of sample solution, which reduces the risk of changing the natural fractions of both redox species. The proposed method was applied to selected samples from open ocean and coastal seawater collected in the South-East Atlantic Ocean during GEOTRACES research cruise GA08. Concentrations of 29–37 nmol/kg of V(V) and 1.5–2.2 nmol/kg of V(IV) in samples off-shore the Namibian coast (43–2997 m water depth) were found. Higher concentrations of V(IV) were detected in near-shore coastal seawater characterized by very low oxygen content (2.4 nmol/kg at 200 m water depth) relative to those from off-shore seawater. The newly obtained results suggest that not only dissolved oxygen concentration but also biogeochemical parameters (e.g. biological activity) may play an important role to explain the distribution of redox species of V in seawater.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139889146","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
Another piece of the living fossil puzzle: A new species of Polymixia Lowe, 1836 (Polymixiiformes: Polymixiidae) from the western South Atlantic 又一块活化石拼图:来自南大西洋西部的 Polymixia Lowe, 1836 新种(Polymixiiformes: Polymixiidae)
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-02-08 DOI: 10.1016/j.dsr.2024.104249
Heloísa De Cia Caixeta , Claudio Oliveira , Marcelo Roberto Souto de Melo
{"title":"Another piece of the living fossil puzzle: A new species of Polymixia Lowe, 1836 (Polymixiiformes: Polymixiidae) from the western South Atlantic","authors":"Heloísa De Cia Caixeta ,&nbsp;Claudio Oliveira ,&nbsp;Marcelo Roberto Souto de Melo","doi":"10.1016/j.dsr.2024.104249","DOIUrl":"https://doi.org/10.1016/j.dsr.2024.104249","url":null,"abstract":"<div><p>The family Polymixiidae is an ancient group of acanthomorph fish, often regarded as living fossils. Currently, there are 11 valid species allocated in the genus <em>Polymixia</em>, and commonly known as beardfish. All species are benthopelagic and can be found at depths between 80 and 800 meters, in the Atlantic, Indian, and Pacific oceans. Traditionally, only two species had been assigned to the Atlantic Ocean, <em>P. lowei</em>, in the western Atlantic, and <em>P. nobilis</em>, in the North Atlantic, including northern South America and Saint Peter and Saint Paul Archipelago; however, recent studies revealed a cryptic species from the Bermudas, described as <em>P. hollisterae</em>, and a yet undescribed species from the Caribbean Sea. Herein, we describe a new species of <em>Polymixia</em> from the western South Atlantic, which was previously confused with <em>P. lowei</em>. The new species is supported by both morphological and molecular evidence and can be distinguished among its congeners by a combination of characters, including counts of gill rakers, pyloric caeca, and dorsal-fin rays, arrangement of scales spines, and the shape of preopercle. The new species is distributed on the upper continental slope in Brazil, from Bahia to Rio Grande do Sul, and Uruguay, between 160 and 600 meters deep.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139732458","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
The microbial lipid signature in sediments and chimneys within a back-arc basin hydrothermal system south of the Antarctic Polar Front 南极极地前沿以南的后弧盆地热液系统沉积物和烟囱中的微生物脂质特征
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-02-07 DOI: 10.1016/j.dsr.2024.104247
Maria T. Hernández-Sánchez , Laura Hepburn , Michael J. Stock , Douglas P. Connelly , Richard D. Pancost
{"title":"The microbial lipid signature in sediments and chimneys within a back-arc basin hydrothermal system south of the Antarctic Polar Front","authors":"Maria T. Hernández-Sánchez ,&nbsp;Laura Hepburn ,&nbsp;Michael J. Stock ,&nbsp;Douglas P. Connelly ,&nbsp;Richard D. Pancost","doi":"10.1016/j.dsr.2024.104247","DOIUrl":"10.1016/j.dsr.2024.104247","url":null,"abstract":"<div><p>The impact of hydrothermal systems on surrounding sedimentary microbial communities is not well understood and previous work has been limited to high temperature vent sites at slow or ultraslow spreading oceanic centres. To build on the current understanding of hydrothermal systems, we explore for the first time the organic geochemistry of the only known back-arc basin hydrothermal system outside the Pacific Ocean: the East Scotia Ridge (ESR), which belongs to the South Georgia and South Sandwich Islands Marine Protected Area. Lipid biomarkers contained in sediments and hydrothermal sulphides along two hydrothermal vent fields north and south of the ESR, respectively, revealed the impact of hydrothermal activity, including both high temperature and low temperature diffusive venting, on sedimentary microbial communities. In the vent field north of the ESR, elevated ring indices of glycerol dialkyl glycerol tetraethers (GDGTs) and proportions of monoalkyl glycerol tetraethers (GMGTs), and a high ratio of total fatty acids (FAs; free plus polar lipids) to putative phytoplankton biomarkers in sediments suggest that high-temperature hydrothermalism has a local impact on surrounding sediments through the input of plume dwelling archaea and bacteria. This impact seems to be restricted to the periphery of the vent source, in agreement with the limited dataset available from slow or ultraslow spreading centres. Likewise, elevated FA to phytoplankton biomarker ratios within a diffusive hydrothermal field south of the ESR suggest an additional input of bacterial biomass relative to background sediments. Our results indicate that low temperature diffusive venting might have a higher impact than previously thought, being locally important in supporting the food chain in deep-sea environments. The distribution of tetraether lipids suggests that a higher proportion of thermophilic archaea thrive in the interior of sulphide chimneys, whereas total FA concentrations and distributions suggest that most bacteria inhabit the exterior chimney layers, where temperature is cooler than the innermost layer in contact with the hydrothermal fluid. Furthermore, differences in total FA concentrations suggest that chimney wall thickness is a control on bacterial abundance through the availability of a higher or lower diversity (and volume) of microhabitats. Our results also indicate that bacteria adapt to increasing temperatures by decreasing their degree of unsaturation. By comparison to GDGT data from other settings, it seems that overall ring indices in hydrothermal deposits are governed by growth temperature, although they might also reflect ecological factors. Our results suggest that hydrothermalism shapes microbial communities within chimneys and surrounding sediments following broadly similar patterns regardless of the type of spreading centre they are located at.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0967063724000177/pdfft?md5=21a3293a4ca8b87b3a6a3eae9de671e1&pid=1-s2.0-S0967063724000177-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139886288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Response of ice krill (Euphausia crystallorophias) density to environmental changes in the Amundsen Sea Coastal Polynya, Antarctica 冰磷虾(Euphausia crystallorophias)密度对南极洲阿蒙森海沿岸多能区环境变化的响应
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-02-05 DOI: 10.1016/j.dsr.2024.104250
Jialiang Yang , Shuai Li , Lingzhi Li , Xin Rao , Shuai Chen , Hongliang Huang
{"title":"Response of ice krill (Euphausia crystallorophias) density to environmental changes in the Amundsen Sea Coastal Polynya, Antarctica","authors":"Jialiang Yang ,&nbsp;Shuai Li ,&nbsp;Lingzhi Li ,&nbsp;Xin Rao ,&nbsp;Shuai Chen ,&nbsp;Hongliang Huang","doi":"10.1016/j.dsr.2024.104250","DOIUrl":"10.1016/j.dsr.2024.104250","url":null,"abstract":"<div><p>The density of ice krill (<em>Euphausia crystallorophias</em>), a species of key ecological value, and related environmental factors were observed along two transects in the Amundsen Sea Coastal Polynya (ASCP) in Antarctica. The distribution of ice krill was processed using two-frequency acoustic backscatter data identification, and the target strength of ice krill was calculated via stochastic distorted-wave born approximation based on the ice krill sample. The ice krill density ranged from 0.96 to 11.01 g m<sup>−2</sup> for each transect (mean value was 5.77 g m<sup>−2</sup> for the entire survey). These results were of a lower order of magnitude than those of a previous study in the same waters, although the ice krill was still the dominant krill specie in this polynya. We contend that the extent of the phytoplankton bloom might be the factor behind this difference, while other hydrographic parameters such as surface temperature and salinity would have some effect on the spatial distribution of ice krill abundance. Meanwhile, the density and height of ice krill abundance suggested that the diurnal effect on the ice krill was almost negligible. According to the fitted results of regression model, the abundance of ice krill in ASCP in 2022 summer was estimated approximately 175,000 tons.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688632","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
Estimating daily subsurface thermohaline structure from satellite data: A deep network with embedded empirical orthogonal functions 从卫星数据估算每日次表层温盐结构:内嵌经验正交函数的深度网络
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-02-01 DOI: 10.1016/j.dsr.2024.104257
Hengqian Yan, Ren Zhang, Huizan Wang, Senliang Bao, Yongchui Zhang, Mei Hong
{"title":"Estimating daily subsurface thermohaline structure from satellite data: A deep network with embedded empirical orthogonal functions","authors":"Hengqian Yan,&nbsp;Ren Zhang,&nbsp;Huizan Wang,&nbsp;Senliang Bao,&nbsp;Yongchui Zhang,&nbsp;Mei Hong","doi":"10.1016/j.dsr.2024.104257","DOIUrl":"10.1016/j.dsr.2024.104257","url":null,"abstract":"<div><p>Estimating subsurface thermohaline structure from concurrent satellite data is a meaningful way to enrich internal oceanic observations. As a powerful tool for data mining, many studies have used machine learning in subsurface reconstruction, but most conventional applications have been purely black-box in nature without further consideration of oceanic characteristics. Instead, proposed here for the first time is a semi-explicit deep network for reconstructing the oceanic interior from surface data. Named EEFFNN, the method embeds empirical orthogonal functions extracted from reanalysis data (the EE part of the name) into the inner framework of a feed-forward neural network (the FFNN part of the name). Comparison with Argo profiles and reanalysis data shows that EEFFNN can significantly outperform conventional machine-learning algorithms in estimating subsurface thermohaline structures and especially subsurface-intensified eddies. Also, EEFFNN can perform thermohaline reconstruction in one pass, making it more lightweight than “shallow” machine-learning algorithms such as random forest. Overall, EEFFNN shows promise for being applied to operational thermohaline reconstruction in the near future.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139677944","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
Mixed layer heat budget in the Mozambique channel: Interannual variability and influence of Rossby waves 莫桑比克海峡混合层热量预算:年际变化和罗斯比波的影响
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-01-24 DOI: 10.1016/j.dsr.2024.104248
D. Mawren , J. Hermes , C.J.C. Reason
{"title":"Mixed layer heat budget in the Mozambique channel: Interannual variability and influence of Rossby waves","authors":"D. Mawren ,&nbsp;J. Hermes ,&nbsp;C.J.C. Reason","doi":"10.1016/j.dsr.2024.104248","DOIUrl":"10.1016/j.dsr.2024.104248","url":null,"abstract":"<div><p>The evolution of the mixed layer temperature anomalies in the Mozambique Channel is analysed using a mixed layer heat budget covering sub-seasonal to interannual time scales. Sub-seasonal variations in mixed layer temperature are largely dominated by surface heat fluxes, except along the southern coast of Mozambique and Madagascar, where both the advection and the residual terms become significant. The northern Channel is dominated by the mean flow while the southern Channel is modulated by both the mean and eddy terms. Minimum heat gain through advection is observed in the channel during January–February when the Northeast Madagascar current opposes the northwesterly monsoonal winds. During the 1997/98 El Niño/positive Indian Ocean dipole, extreme warming and coral bleaching events were noted in the northern Channel. Such warming was linked with the relaxation of local winds, positive heat gain from the atmosphere and the shedding of large anticyclonic eddies northwest of Madagascar, associated with the arrival of downwelling Rossby waves. By contrast, upwelling Rossby waves and large cyclonic eddies in the Channel occurred during the 1998–2001 protracted La Niña, but only the northern part of the Channel experienced significant negative anomalies in mixed layer temperature. While no coral bleaching hotspots were noted in the northern Channel in summer 1999/2000 due to negative anomalies in advection, marine heatwaves occurred in the southern Channel during that summer. Finally, the protracted 1998–2001 La Niña was the last time that substantial upwelling Rossby wave activity occurred in the tropical South Indian Ocean; recent La Niña events showed muted or weak upwelling Rossby wave activity, including the recent 2020–2022 protracted event. Post-2001 also occurs at the same time as a stronger warming trend in the southwest Indian Ocean region.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0967063724000189/pdfft?md5=97feaf93b84eb82a489d7af9b4d5e478&pid=1-s2.0-S0967063724000189-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139551755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characteristics of thermohaline staircases in the Southeast Caribbean sea revealed by seismic reflection data 地震反射数据揭示的东南加勒比海温盐阶梯特征
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-01-24 DOI: 10.1016/j.dsr.2024.104246
Mengli Liu, Haibin Song, Kun Zhang, Shun Yang, Linghan Meng
{"title":"Characteristics of thermohaline staircases in the Southeast Caribbean sea revealed by seismic reflection data","authors":"Mengli Liu,&nbsp;Haibin Song,&nbsp;Kun Zhang,&nbsp;Shun Yang,&nbsp;Linghan Meng","doi":"10.1016/j.dsr.2024.104246","DOIUrl":"10.1016/j.dsr.2024.104246","url":null,"abstract":"<div><p>Seismic oceanography, characterized by its high horizontal resolution and large imaging coverage, can be used to directly measure the horizontal extension of the thermohaline staircase. This study presents an investigation into the seismic reflection imaging of thermohaline staircases located in the Southeast Caribbean Sea. The findings indicate clear interactions between the staircases and various structures, such as eddies and internal waves. The pre-stack migration method based on common offset gathers is applied to analyze the changes of the thermohaline staircase over different times along line L3. The distributions of dissipation rates within 900 m depth are obtained. The findings indicate the internal wave activity and turbulence in the vicinity of the staircase are locally low. This restraint may support the continuous and enduring presence of the staircase in this region. However, the staircase region away from the eddy has a limited restraining effect on the internal wave, and its intense activity causes intense turbulence, which destroys staircase structure. Our results indicate that the reflection coefficients of the thermohaline staircase and intrusions on the seismic section exhibit opposite polarities. There exists certain intrusion structure within the staircase at the flank of eddy.</p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587695","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
Biogeochemical cycling of halogenated organic compounds in the ocean: Current progress and future directions 海洋中卤代有机化合物的生物地球化学循环:当前进展和未来方向
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-01-19 DOI: 10.1016/j.dsr.2024.104237
Yuheng Liu , Li Wang , Rulong Liu , Jiasong Fang
{"title":"Biogeochemical cycling of halogenated organic compounds in the ocean: Current progress and future directions","authors":"Yuheng Liu ,&nbsp;Li Wang ,&nbsp;Rulong Liu ,&nbsp;Jiasong Fang","doi":"10.1016/j.dsr.2024.104237","DOIUrl":"10.1016/j.dsr.2024.104237","url":null,"abstract":"<div><p>Halogenated Organic Compounds (HOCs) are a class of refractory organic compounds produced in large quantities in the ocean, and some compounds can even persist over millions of years. The processes of production, transportation, and burial of HOCs, as well as the transformation and degradation of these compounds by microorganisms<span>, are important parts of the biogeochemical cycling of carbon and halogen in the ocean. Dehalogenation microorganisms and dehalogenation pathways are prevalent in the deep-sea and the subseafloor biosphere, indicating the significance of HOCs metabolism in the ocean and interior of the earth. This paper reviews the current understanding on the generation, distribution, and transport of HOCs, as well as microbial mediated HOC degradation processes in the ocean. The preliminarily model for biogeochemical cycle of marine HOCs is summarized based on the existing knowledge. The research gaps and limitations are identified and future directions are also discussed.</span></p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139515337","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
On the magnetic field induced by swell in inhomogeneous seawater 关于非均质海水中膨胀引起的磁场
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-01-19 DOI: 10.1016/j.dsr.2024.104244
Hongjuan Zhou , Ronghuan Song , Tao Jin , Zhiquan Zhou , Fenggang Yan
{"title":"On the magnetic field induced by swell in inhomogeneous seawater","authors":"Hongjuan Zhou ,&nbsp;Ronghuan Song ,&nbsp;Tao Jin ,&nbsp;Zhiquan Zhou ,&nbsp;Fenggang Yan","doi":"10.1016/j.dsr.2024.104244","DOIUrl":"10.1016/j.dsr.2024.104244","url":null,"abstract":"<div><p><span>The magnetic field induced by ocean swell moving in the geomagnetic field<span> is an important electromagnetic noise in the ocean environment for </span></span>magnetic anomaly<span> detection, and it is calculated in this work accounting into the fact that the conductivities of the ocean are inhomogeneous vertically, which is ignored in the former works, and the results are verified by comparing with those obtained by the former models. The swell-induced magnetic fields at 2 locations in the ocean are calculated and analyzed based on the statistical seawater conductivity data sets and the International Geomagnetic Reference Field. Taken the model developed here as a correct reference, the error of the former model is estimated firstly, and it reveals that the error is lower in shallow water and decreases with the wave period. It is further concluded that both the amplitude and vertical distribution range of the induced magnetic field increase with the wave period. The spectra of swell-induced magnetic field calculated with ocean wave spectrum under different wind scales are evaluated, and the impact ranges of ocean wave magnetic noise are evaluated at the sensitivity of a marine magnetometer. In the end, after examining the variation of the induced magnetic field at sea surface due to the change of geomagnetic field and seawater conductivity, it reveals that the annual variation presents a clear periodic change pattern which mainly depends on the annual variation of the conductivity near the sea surface, and the amplitude of the induced magnetic field changes in strong positive correlation with the intensity of geomagnetic field. The studies in this work are significant for applications such as magnetic anomaly detection of marine targets.</span></p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498692","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
Novel insights into deep-sea hydrothermal vent and cold seep adaptation inferred from comparative transcriptome analysis of a munidopsid squat lobster distributed in both environments 通过对分布于深海热液喷口和冷渗漏两种环境中的鳞龙虾进行转录组比较分析,推断出深海热液喷口和冷渗漏适应性的新见解
IF 2.4 3区 地球科学
Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-01-18 DOI: 10.1016/j.dsr.2024.104245
Jiao Cheng , Han Yan , Min Hui , Zhongli Sha
{"title":"Novel insights into deep-sea hydrothermal vent and cold seep adaptation inferred from comparative transcriptome analysis of a munidopsid squat lobster distributed in both environments","authors":"Jiao Cheng ,&nbsp;Han Yan ,&nbsp;Min Hui ,&nbsp;Zhongli Sha","doi":"10.1016/j.dsr.2024.104245","DOIUrl":"10.1016/j.dsr.2024.104245","url":null,"abstract":"<div><p><span><span>Oases of life around deep-sea hydrothermal vents and cold seeps<span><span> have revolutionized our perception of the deep sea. A growing understanding of adaptive strategies for macrofauna living in deep-sea extreme environments has been accompanied by a parallel realization that the species distributed in different types of deep-sea chemosynthetic ecosystems likely require specific adaptation to their respective habitats. Here we put this hypothesis to a test through comparing muscle and </span>hepatopancreas transcriptional profiles of a munidopsid </span></span>squat lobster, </span><em>Munidopsis lauensis</em><span>, from a hydrothermal vent<span> in the Manus back-arc Basin (HV) and a methane seep in the South China Sea (MS). In total, 6680 differentially expressed transcripts (DETs) were identified between HV and MS lobsters, with 3013 DETs specific to the muscle, 2650 DETs specific to the hepatopancreas, and 1017 DETs common to both tissues. The tissue-specific DETs in the muscle were mostly enriched in cytoskeleton<span><span> and muscle cell development, while those in the hepatopancreas largely functioned in lipid transport and binding. Functional annotation and enrichment analyses revealed the 1017 shared DETs were involved in many biological processes, including detoxification, oxidative stress resistance and innate immune response. Meanwhile, there was clear evidence for the upregulation of genes associated with </span>hydrogen sulfide (H</span></span></span><sub>2</sub>S) oxidation, endogenous H<sub>2</sub><span>S production and mitochondrial oxidative phosphorylation in HV lobsters. This variation in gene expression could have functional relevance for </span><em>M. lauensis</em> to cope with environmental heterogeneity between HV and MS, such as different concentrations of H<sub>2</sub><span>S and heavy metals. Altogether, our results add to previous findings in suggesting that adaptation to deep-sea vent and seep environments involves modification of multiple, complex physiological processes that govern differences in stress resistance.</span></p></div>","PeriodicalId":51009,"journal":{"name":"Deep-Sea Research Part I-Oceanographic Research Papers","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498595","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信