Continental Shelf Research最新文献

{"title":"Large radiational S2 tides in the East China sea","authors":"Haidong Pan ,&nbsp;Fei Teng ,&nbsp;Junchuan Sun ,&nbsp;Tengfei Xu ,&nbsp;Zexun Wei","doi":"10.1016/j.csr.2024.105179","DOIUrl":"10.1016/j.csr.2024.105179","url":null,"abstract":"<div><p>S₂ ocean tide, as one of the most important semi-diurnal constituents, is composed of astronomical S₂ tide originated from gravitational forcing and radiational S₂ tide derived from solar radiation. Although there are lots of researches which have explored the features of radiational S₂ tides in the globe, less known and less discussed, are the radiational S₂ tides in the East China Sea due to lack of water level observations. In present study, radiational S₂ tides in the East China Sea are estimated and discussed via the combination of 39 coastal tide gauges and EOT20 tidal model derived from multi-satellite altimeter records. We find that radiational S₂ tides obtained from tide gauges and satellite-derived EOT20 model are roughly consistent in the East China Sea: (1) The largest radiational S₂ amplitude can be as high as 14 cm. (2) Radiational and astronomical S₂ tidal amplitudes are large in the coastal zones but small in the open sea. (3) Radiational S₂ amplitudes are ∼12% of astronomical S₂ amplitudes while phase differences between radiational and astronomical S₂<span> tides are ∼114°. The inconsistency between coastal tide gauges and EOT20 model in coastal zones should be induced by the temporal evolution<span> of tides and the inaccuracy of satellite altimeter observations in this region. Furthermore, the methods used in the East China Sea can be easily applied to other sea areas, except diurnal resonant sea areas where the smooth nature of semi-diurnal admittances may be corrupted by nonlinear interactions between anomalously large diurnal tides.</span></span></p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496532","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":"Intensity and frequency of seabed shear stress and sediment mobilization on the Canadian Atlantic Shelf — A modelling study","authors":"M.Z. Li ,&nbsp;Y. Wu ,&nbsp;W.A. Perrie ,&nbsp;H. Shen ,&nbsp;E.L. King","doi":"10.1016/j.csr.2024.105181","DOIUrl":"10.1016/j.csr.2024.105181","url":null,"abstract":"<div><p>Ocean surface waves and currents can interact to produce strong seabed shear stress and sediments mobilization affecting infrastructure safety, benthic habitat distribution and decision for sustainable development of the oceans. Modelled waves, tidal current and circulation current data for a 3-year period were used in a combined-flow sediment transport model to simulate the seabed shear stresses and the mobilization of observed sediments on the Canadian Atlantic Shelf. The modelling results are presented and analyzed to update the framework of seabed disturbance and sediment mobility on the Atlantic Shelf. The Atlantic Shelf is affected by strong waves and tidal currents. Maximum mean significant wave height over the modelled period can reach 3.5 m and mean tidal currents reach up to 1.2 m s⁻¹. Our modeling results indicate that the mean wave and tidal current shear velocities both reach the maximum values of ∼4 cm s⁻¹. Observed sediments on the Atlantic Shelf can be mobilized by tidal currents at least once during the modelled 3-year period over 30 % of the shelf area while storms can mobilize sediments over 35 % of the shelf area suggesting a slightly stronger sediment mobilization by storms. Furthermore, waves and currents interact to cause enhanced combined wave-current shear velocities &gt;5 cm s⁻¹ that is capable of mobilizing sediments over 63 % of the shelf area, double that due to tides or waves alone. The spatial variation of the relative importance of waves, tidal current and circulation current in mobilizing sediments was used to classify the Atlantic Shelf into six disturbance types. Wave-dominant and tide-dominant disturbance types are equally important and both occupy ∼25 % of the shelf area. Mixed disturbance is insignificant and accounts for only 3 % of the shelf area. Universal Seabed Disturbance Index (SDI) and Sediment Mobility Index (SMI) were applied to better quantify the exposure of the seabed to oceanographic processes and sediment mobilization, incorporating both the magnitude and frequency of these processes. The values of SDI and SMI on the Canadian Atlantic Shelf are found to be comparable to those on the Australian shelves and the Irish Sea shelf. These indices, together with the seabed disturbance type classification scheme, potentially can be used as standard parameters to quantify seabed disturbance and sediment mobility on other shelves of the world.</p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139666242","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":"A community-based bioassay for the salinity stress on periphytic protozoan fauna in marine ecosystems","authors":"Awais Ali ,&nbsp;Xiaoxiao Zhong ,&nbsp;Qiaoling Wang ,&nbsp;Henglong Xu","doi":"10.1016/j.csr.2024.105177","DOIUrl":"10.1016/j.csr.2024.105177","url":null,"abstract":"<div><p>To evaluate the salinity stress on ecological quality using protozoa, a 1-month baseline study was conducted along a gradient of salinity 9, 19, 29, 39, and 49 PSU (practical salinity unit). Protozoan samples were collected from an intertidal zone of the Yellow Sea, northern China. The findings demonstrated that (1) protozoan species represented different tolerance to scales of salinity stress; (2) the species richness decreased with increase of salinity, while in individual abundances sharply dropped with both increase and decrease of salinity compared to the control (29 PSU); (3) the probit regression revealed the median inhibition concentrations (<em>IC</em>_<em>50</em>) values 21.14 and 38.24 PSU for low (&lt;29 PSU) and high (&gt;29 PSU) situations, respectively; and (4) high salinity stress significantly shifted the community pattern of the protozoan fauna. Therefore, it is suggested that periphytic protozoan communities may be used a useful bioindicator of ecological quality under salinity stress in marine ecosystems.</p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496421","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":"Wave amplification forced by an atmospheric pressure disturbance on the continental shelf","authors":"Yucheng Zhou,&nbsp;Xiaojing Niu","doi":"10.1016/j.csr.2024.105178","DOIUrl":"10.1016/j.csr.2024.105178","url":null,"abstract":"<div><p>The well-known 2022 Tonga volcanic tsunami event raised worldwide attention and the leading tsunamis induced by the atmospheric disturbance<span><span> have been found to be small in deep-sea and greatly amplified over the continental slope. It prompted our thoughts what influences the amplification of the forced wave over continental slope. This study focuses on evolution of the forced wave induced by pressure disturbance moving from deep-sea basin to land, and aims to clarify the influences of topographic and barometric factors on the amplification ratio based on numerical experiments of the idealized problem. When a pressure disturbance moves faster than free water waves in deep-sea basin similar with the Tonga event, it is shown that the maximum amplification ratio appears at a slope neither too steep nor too mild. It is found that the relative slope length to the spatial scale of pressure disturbance is a good index for the amplification ratio. As the translational speed of pressure disturbance varies, the nearshore wave is greatly affected by the </span>Froude number Fr in the deep-sea. It should be noted that a huge amplification can happen over the slope when Fr &lt; 1 in deep-sea, and form a more dangerous hazard than Fr &gt; 1.</span></p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496460","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":"Quantifying mud settling velocity as a function of turbulence and salinity in a deltaic estuary","authors":"M. McDonell ,&nbsp;K. Strom ,&nbsp;J. Nittrouer ,&nbsp;G. Mariotti","doi":"10.1016/j.csr.2024.105180","DOIUrl":"10.1016/j.csr.2024.105180","url":null,"abstract":"<div><p><span><span>Mud settling velocity in coastal regions is controlled by </span>flocculation<span><span>, which in turn strongly depends on turbulence, chemistry, and biology of the water-sediment mixture. As a result, mud settling velocity can be poorly constrained, and vary in space and time by orders of magnitude. Here we quantified mud settling velocity in Barataria Basin, a deltaic estuary in Louisiana (USA), using three independent methods: </span>eddy covariance (one station for 200 days), floc cameras (4 stations at one time), and Rouse profile inversion (14 stations, replicated 10–30 times each). Eddy covariance indicates that settling velocity increases with turbulence, at least within the range experienced at the site (shear rate </span></span><em>G</em><span> up to 10 Hz). Settling velocity increases with salinity (in the 0 to 6 psμ range) for moderate turbulence levels (5 &lt; </span><em>G</em> &lt; 10 Hz), but it is nearly independent of salinity for low levels of turbulence (<em>G</em><span> &lt; 5 Hz). Consistent with this finding, floc camera measurements – taken at low turbulence levels – indicate similar floc sizes for salinities from 0.4 to 20 psu. Settling velocity estimated from a Rouse profile inversion also lacks a dependence on salinity, likely because they were taken at low turbulence levels. This study is novel in that it utilizes three methodologies to independently predict the mud settling velocity, with quantified settling velocity values ranging 0.1–1 mm/s, and with most values between 0.2 and 0.5 mm/s. Overall these measurements confirm that mud is flocculated in both the saline and freshwater zones of Barataria Basin, and that turbulence is the largest factor controlling mud settling velocity. Nonetheless, salinity can increase mud settling velocity up to a factor of two. These results could inform the management of sediment imported into estuaries from freshwater sources, such as through natural drainages, crevasse splays, and engineered river diversions.</span></p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139538090","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":"Benthic foraminiferal assemblages in the coastal zone of the yellow river delta: Environmental significance and characteristics of microbial diversity","authors":"Shuyang Huang ,&nbsp;Qing Li ,&nbsp;Xiaohua Qiu ,&nbsp;Hong You ,&nbsp;Ruimin Lv ,&nbsp;Wei Liu ,&nbsp;Qingfeng Chen ,&nbsp;Tiantian Wang ,&nbsp;Jing Zhang ,&nbsp;Junjian Ma ,&nbsp;Zihao Wang ,&nbsp;Shigang Ding","doi":"10.1016/j.csr.2024.105183","DOIUrl":"10.1016/j.csr.2024.105183","url":null,"abstract":"<div><p><span>Unicellular eukaryotes known as benthic foraminifera<span> have sophisticated survival mechanisms and ecological environmental indicators. Ten surface samples from the Yellow River Delta's<span> coastal region were taken for this study to analyze the distribution of foraminifera in relation to environmental factors and to examine their microbial diversity. We looked at the physicochemical aspects of the environment at each sampling site (such as pH, TN, TOC, EC, δ</span></span></span>¹³C, δ¹⁵<span>N, PAHs, etc.), and we employed 16S rRNA high-throughput sequencing analysis to look into the interactions between microbial communities and foraminiferal species. The findings demonstrated that the Yellow River Delta's advantage benthic foraminiferal species were </span><em>Quinqueloculina complanata</em>, <em>Ammonia beccarii</em>, and <em>Ammonia aomoriensis</em><span>, and that TOC and TN were significant determinants of the distribution of benthic foraminiferal communities. PAH enrichment in the coastal zone effects on microbial communities and benthic foraminifera are not yet readily apparent. Sediment organic carbon and nitrogen isotope analysis revealed that marine plankton may be the dominant source of organic matter in the coastal zone sediments in the research area, which was made up of both land-based and marine organic matter. It implies that foraminifera have some environmental indicators, especially when combined with the distributional traits of the benthic foraminiferal assemblages and their considerable association with environmental parameters. The findings revealed that </span><em>Q. complanata</em> was found in the Yellow River water-affected estuarine coastal zone, <em>A. aomoriensis</em> was significantly influenced by sediment organic matter content and reflected the estuarine and nearshore environments and the combination of <em>Ammonia beccarii</em>-<em>Ammonia aomoriensis</em>-<em>Elphidium excavatum</em><span> assemblage indicated a semi-open intertidal shallow marine environment. Additionally, benthic foraminifera showed a responsive association with microorganisms<span>, indicating that microbial diversity may be one of the driving forces behind benthic foraminifera's ability to adjust to environmental changes. The findings of this study will open up new avenues for research into the environmental importance of coastal zone ecosystems and for understanding how benthic foraminiferal communities survive.</span></span></p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139647829","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":"Vertical distribution of primary production and chlorophyll a in the eastern Kara Sea: Relations with river plume effects in late summer and autumn","authors":"Andrey B. Demidov ,&nbsp;Anna V. Kostyleva ,&nbsp;Vladimir A. Artemiev ,&nbsp;Alexander A. Polukhin ,&nbsp;Sergey A. Shchuka ,&nbsp;Elena V. Eremeeva ,&nbsp;Anastasia S. Tiurina ,&nbsp;Olga V. Vorobieva ,&nbsp;Mikhail V. Flint","doi":"10.1016/j.csr.2024.105176","DOIUrl":"10.1016/j.csr.2024.105176","url":null,"abstract":"<div><p>Quantification of the vertical distribution of chlorophyll <em>a</em> (Chl-<em>a</em><span>), as one of characteristics of primary production (PP), is critically important to estimate annual PP in the water column (IPP) using models and remote sensing data. IPP estimation in optically complex and highly variable waters such as the Kara Sea is not a trivial task. In the present study, based on the data obtained during three multidisciplinary cruises to the eastern regions of the Kara Sea in August–October, the differences in the vertical distribution of Chl-</span><em>a</em><span> and PP under and without the influence of the river plume<span> (Case II and Case I water types, respectively) are established. In Case I waters in August 2014, under the low values of the diffuse attenuation coefficient (</span></span><em>K</em>_d<span>) of downwelling photosynthetically available radiation (PAR) (the median value (</span><em>Me</em>) <em>K</em>_d = 0.158 m^-1) and the deep euphotic layer (<em>Z</em>_eu) (<em>Me</em> = 30 m), the deep chlorophyll maximum (DCM) was well-pronounced. At the end of September 2015 in Case II waters influenced by the river runoff, when <em>Me K</em>_d increased 1.7-fold and <em>Z</em>_eu decreased 1.3-fold, the DCM was absent. Also, the DCM was not manifested at the end of the growing season, under conditions of extremely low underwater PAR (<em>Me</em> = 0.35 mol quanta m⁻² d⁻¹). In the sampling period, the PP maxima were observed at the surface and the DCM did not influence the vertical PP distribution. The depth of the nitracline was directly associated with the distribution of riverine waters and determined the depth and degree of DCM manifestation. The outcomes of the presented study suggest that a decrease in subsurface PAR influenced by the impact of riverine waters and the total decline of incident radiation from August to October determine the vertical distribution of PP and Chl-<em>a</em>.</p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496464","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":"Trophic variability of inter- and intra-copepod species in the South Sea of Korea during summer","authors":"Hyuntae Choi ,&nbsp;Seeryang Seong ,&nbsp;Nayeon Park ,&nbsp;Seunghan Lee ,&nbsp;Dokyun Kim ,&nbsp;Wonchoel Lee ,&nbsp;Kyung-Hoon Shin","doi":"10.1016/j.csr.2024.105175","DOIUrl":"10.1016/j.csr.2024.105175","url":null,"abstract":"<div><p><span><span>Spatial variation and interspecies differences in the trophic position (TP) of copepods were investigated using nitrogen isotope ratios<span> of amino acids. In the summer of 2021, coastal waters and the Changjiang diluted water generated clear seawater temperature and salinity fronts in the South Sea of </span></span>Korea. </span><em>Paracalanus parvus</em> s. l. was a dominant species in the copepod community, and the second dominant species differed among inshore, intermediate, and offshore sites. The TP of each copepod species was estimated in two ways, considering only metazoan diets (TP_Glu<span>, based on glutamic acid and phenylalanine nitrogen isotope ratios) and both metazoan and protistan diets (TP</span>_Ala, based on alanine and phenylalanine nitrogen isotope ratios). Both TP_Glu and TP_Ala indicated trophic variability among copepod species and the contribution of protistan diets as a food source in the study area. <span><em>Calanus</em><em> sinicus</em></span> showed a similar herbivorous TP of 2.0 in both TP_Glu and TP_Ala, suggesting little contribution from protistan diets. Two copepod species (<em>P. parvus</em> s. l. and <span><em>Acartia</em><em> omorii</em></span>) exhibited TP_Glu values of approximately 2.0 but their TP_Ala<span> values increased from 0.1 to 0.5, indicating mixed diets of both primary producers and protists. The other three copepods (</span><em>Pseudocalanus</em> sp., <em>Oithona similis</em>, and <em>O. atlantica</em>) showed a wide range in TP_Glu (2.4–3.1) and TP_Ala (2.7–3.4), suggesting that protistan trophic transfers enhance TP_Ala<span> (by up to 0.5) in omnivorous copepods. We found a spatial variation in the TPs of copepods among water masses by various controlling factors including surface seawater temperature, salinity, and size-fractionated Chl-</span><em>a</em>. Our findings support that the <span>TP</span> values could be potential indicative of interspecies variability, providing useful information on the composition of the planktonic food web.</p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139373798","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":"Surface circulation in Todos Santos Bay, Baja California, México","authors":"Reginaldo Durazo ,&nbsp;Xavier Flores-Vidal ,&nbsp;Rubén Castro ,&nbsp;Francisco J. Ocampo-Torres ,&nbsp;Johanna Saavedra ,&nbsp;Isaac Rodríguez-Padilla ,&nbsp;Marco Larrañaga","doi":"10.1016/j.csr.2024.105171","DOIUrl":"10.1016/j.csr.2024.105171","url":null,"abstract":"<div><p>Depending on dimensions, orientation and topographic features, the circulation of semi-enclosed seas adjacent to regions of coastal upwelling are strongly influenced by their interaction with a shelf upwelling jet of adjacent waters. A special case are square bays, where opening is about the same size as length, and are bordered by headlands at the entrance. This study analyzed surface currents measured between 2009 and 2020 with high-frequency (HF) radar in Todos Santos Bay, a square bay located in northwestern México, to obtain mean and seasonal surface circulation patterns. HF radar measurements indicate that the average circulation pattern within the bay is cyclonic, with water of the California Current (CC) entering primarily as a coastal jet through the northern mouth of the bay. The similarity of monthly average maps with the long-term average suggests the cyclonic circulation persists year-round. Scale analysis demonstrates that given the size of the bay, only one eddy, primarily controlled by inertia, is dominantly formed inside. The mean cyclonic circulation defines the bay as an upwelling shadow.</p></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102802","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":"Iberian Atlantic Margin: Natural and anthropogenic processes and records","authors":"Alejandro Cearreta,&nbsp;María Jesús Irabien,&nbsp;Ane García-Artola","doi":"10.1016/j.csr.2024.105174","DOIUrl":"10.1016/j.csr.2024.105174","url":null,"abstract":"","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102969","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}