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Inversion of Seabed Geotechnical Properties in the Arctic Chukchi Deep Sea Basin Based on Time Domain Adaptive Search Matching Algorithm

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Journal of Ocean University of China 2024年第4期23卷 933-942页

作者： AN Long XU Chong xing junhui GONG Wei JIANG Xiaodian XU Haowei LIU Chuang YANG Boxue Jiangsu Automation Research Institute Lianyungang 222061China Key Laboratory of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Qingdao Marine Science and Technology CenterQingdao 266071China

The chirp sub-bottom profiler,for its high resolution,easy accessibility and cost-effectiveness,has been widely used in acoustic *** this paper,the acoustic impedance and grain size compositions were obtained based on the chirp sub-bottom profiler data collected in the Chukchi Plateau area during the 11th Arctic Expedition of *** time-domain adaptive search matching algorithm was used and validated on our established theoretical *** misfit between the inversion result and the theoretical model is less than 0.067%.The grain size was calculated according to the empirical relationship between the acoustic impedance and the grain size of the *** average acoustic impedance of sub-seafloor strata is 2.5026×10^(6) kg(s m^(2))^(-1)and the average grain size(θvalue)of the seafloor surface sediment is 7.1498,indicating the predominant occurrence of very fine silt sediment in the study *** of the inversion results and the laboratory measurements of nearby borehole samples shows that they are in general agreement.

关键词： time domain adaptive search matching algorithm acoustic impedance inversion sedimentary grain size Arctic Ocean Chukchi Deep Sea Basin

Venoarterial extracorporeal membrane oxygenation in acute myocardial infarction

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Emergency and Critical Care Medicine 2024年第1期4卷 1-3页

作者： junhui xing Department of Cardiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina.

IntroductionMortality and complications associated with acute myocardial infarction(AMI)have gradually decreased in the era of reperfusion ***,the outcomes are still poor for AMI patients with severe complications.[1]The quest for further improvement of the use of active mechanical circulatory support(MCS)devices is rapidly *** extracorporeal membrane oxygenation(VA-ECMO)is a form of heart-lung bypass that offers temporary mechanical support and simultaneous extracorporeal gas exchange,usually acting as a bridge to *** has been widely used since 1972,after its *** extracorporeal membrane oxygenation provides cardiopulmonary support and is used to rescue patients with cardiopulmonary *** use of VA-ECMO after AMI with severe complications is *** studies have demonstrated a significant increase in survival using VA-ECMO in patients with AMI,and early VA-ECMO initiation yields better *** review article is aimed at evaluating the use of VA-ECMO in patients with AMI.[2]

关键词： extracorporeal infarction arterial

Seabed Physical Parameter Research Based on Active-Source OBS Data in the Chukchi Sea Shelf of the Arctic

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Journal of Ocean University of China 2023年第3期22卷 675-682页

作者： ZHEN Sheng xing junhui JIANG Xiaodian Key Laboratory of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China

The acquisition of seabed physical parameters is one of the focuses of marine acoustic ***,the activesource ocean bottom seismometer(OBS)detection method in the marine geophysical research is rarely used to acquire seabed physical parameters,and less work is performed in the *** this study,two active-source OBS data collected from the 9th and 11th Chinese National Arctic Research Expedition(CHINARE)are selected to obtain the physical parameters of seabed *** kinds of energy spark are used as the active sources,while the cost function inversion method is used based on the arrival time difference between the reflected and direct *** thickness and sound velocity of the sediment layers are obtained by inversion,and the empirical formula is used to calculate the physical parameters of the seabed sediment,which are compared with the measured *** cost function inversion method based on the time difference of arrival of the reflected and direct waves is tested to be effective and feasible in the inversion of seabed parameters from active-source OBS *** method is further applied to obtain the physical parameters of Chukchi seabed sediments,which provides the idea and reference for the application of marine geophysical activesource OBS detection technology in the inversion of polar seabed physical parameters.

关键词： physical parameters of seafloor sediments ocean bottom seismometer(OBS) Arctic Chukchi Sea

Tectonics of the Solomon Sea Basin from Vertical Gravity Gradient and Seismic Data

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 610-622页

作者： GONG Wei xing junhui MENG Qingwei xing Lei XU Chong ZHANG Hao Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdaoShandong 266100China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandong 266237China Chinese Academy of Geological Sciences Beijing 100037China

The Solomon Sea Basin is a Cenozoic back-arc spreading basin within the convergence system of the Pacific and Indo-Australian *** the background of subduction polarity reversal,the current Solomon Sea Basin gradually formed a rhombic morphology with the subduction of the basin along the New Britain Trench and the Trobriand *** analyzing the vertical gravity gradient,natural earthquake and seismic reflection data,this study determines the structural characteristics of the Solomon Sea *** was found that the tectonics of the basin are characterized by the original expansion structure within the central part in addition to the structure induced by the latest subduction along the basin *** original spreading structure of the basin presented an east–west linear graben and horst controlled by normal faults during the basin expansion *** a result of the subduction and slab-pull of the Solomon Sea Basin,extensional structure belts parallel to the New Britain Trench formed along the basin margin.

关键词： vertical gravity gradient seismic data tectonics New Britain Trench Solomon Sea Basin

The Subduction Structure Beneath the New Britain Island Arc and the Adjacent Region from Double-Difference Tomography

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Journal of Ocean University of China 2023年第1期22卷 107-118页

作者： ZHANG Hao GONG Wei xing junhui XU Chong LI Chaoyang Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

We applied double-difference tomography to relocate seismic events and determine the lithospheric velocity structure beneath the New Britain Island arc and the South Bismarck Sea Basin,based on the local P wave arrival time dataset collected by the International Seismological *** of the seismic relocation and velocity inversion show that the subduction of Solomon Sea Plate along the New Britain Trench is spatially different above 150 km,and the subduction angle of the slab on the west side is higher than that on the east *** relocated earthquakes also show that there are double seismic zones at the depths of about 30–90km beneath the New Britain Island *** velocity structure shows that the dehydration of the subducting slab caused the low-velocity anomalies in mantle wedge above the slab,which are associated with the magmatic activities around the New Guinea-New Britain Island ***,it shows that there is another low-velocity anomaly zone beneath the Bismarck mid-oceanic ridge with spatial *** the west of the Bismarck mid-oceanic ridge,the low-velocity anomaly is weakly connected to the subducted Solomon Sea ***,the low-velocity anomaly beneath the Manus Sea Basin is highly intertwined to the subducting slab and its mantle wedge,indicating that the subduction of the Solomon Sea Plate might be a key deep dynamic factor that drives the spreading of the Manus Sea Basin and the separation of the Bismarck Plate.

关键词： New Britain Trench Bismarck Sea Basin Manus Sea Basin double-difference tomography

累及舟骨、楔骨或舟楔关节的Lisfranc损伤的外科治疗

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中华骨与关节外科杂志 2024年第4期17卷 326-332页

作者：邢俊晖赵丕乾高铭杨王长宝程宇张洪涛苏州大学附属第一医院骨科江苏苏州215006

目的:探讨累及舟骨、楔骨或舟楔关节的Lisfranc损伤的特点及治疗手段。方法:回顾性分析2017年11月至2022年11月收治的14例Lisfranc损伤患者的临床资料。其中男9例,女5例,年龄22~58岁,平均(35.6±8.7)岁。包括舟楔关节脱位5例,舟骨骨折3... 详细信息

目的:探讨累及舟骨、楔骨或舟楔关节的Lisfranc损伤的特点及治疗手段。方法:回顾性分析2017年11月至2022年11月收治的14例Lisfranc损伤患者的临床资料。其中男9例,女5例,年龄22~58岁,平均(35.6±8.7)岁。包括舟楔关节脱位5例,舟骨骨折3例,内侧楔骨骨折6例。所有患者均采用切开复位内固定术进行治疗。术后观察患者切口感染、足部疼痛或感觉麻木等手术并发症发生情况。术前及末次随访时记录患者疼痛视觉模拟评分(VAS),同时末次随访时应用美国足踝外科协会(AOFAS)中足评分评估患者足部功能。结果:14例患者随访22.5(14.5,32.0)个月(4~53个月)。术后仅1例患者出现足背部麻木,其余患者均未发生手术并发症。末次随访时疼痛VAS评分为1.5(1.0,2.0)分,低于术前的(7.4±0.8)分,且差异有统计学意义(U=0,P<0.05);末次随访时患者AOFAS评分达到(75.4±10.3)分,运动功能显著改善,优良率为71.4%(10/14),且负重后患者疼痛明显减轻。结论:累及舟骨、楔骨或舟楔关节的Lisfranc损伤有别于累及第1跖楔关节的Lisfranc损伤,处理时需要根据暴力损伤的走行方向确定损伤起点,从而制定具体的手术方案,以免遗漏损伤部位而影响预后。

关键词： Lisfranc损伤舟骨骨折楔骨骨折舟楔关节脱位

Density Structure of the Papua New Guinea-Solomon Arc Subduction System

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中国海洋大学学报:英文版 2023年第5期22卷 1269-1276页

作者： XU Chong xing junhui GONG Wei ZHANG Hao XU Haowei XU Xiaoyu Key Laboratory of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China QiLu Research Institute Aerospace Information Research Institute Chinese Academy of SciencesJinan 250002China

The Papua New Guinea-Solomon(PN-SL)arc is one of the regions with active crustal motions and strong geological ***,its complex subduction system makes it an ideal laboratory for studying the initiation mechanism of plate ***,the PN-SL subduction system has not yet been sufficiently studied,and its density structure has yet to be *** this paper,we used the free-air gravity data,Parker-Oldenburg density surface inversion method,and the genetic algorithm density inversion method to obtain the density structure of an approximately 1000-km-long northwest-southeast line crossing the PN-SL subduction system under the constraints of the CRUST1.0 global crustal model,onshore seismic data,and the LLNL-G3Dv3 global P-wave velocity *** density structure shows that density differences between the plates on the two sides of the trench could play a significant role in plate subduction.

关键词： Papua New Guinea-Solomon plate subduction gravity anomaly density structure genetic algorithm

Teleseismic P-Wave Tomography of the New Guinea-Solomon Arc System

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Journal of Ocean University of China 2022年第3期21卷 694-706页

作者： FENG Bing ZHANG Hao GONG Wei xing junhui LI Deyong XU Chong AN Long Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao266100China Laboratory for Marine Mineral Resources Pilot National Laboratory Qingdao for Marine Science and Technology(Qingdao)Qingdao266237China

A P-wave tomographic traveltime inversion was applied to obtain a new model of seismic velocity anomalies beneath the New Guinea-Solomon arc system(PN-SL).The P-wave traveltime data,obtained from the revised International Seismological Center catalog,were recorded by 82 seismic stations in the *** the constraints of the epicenter distance,magnitude,and the number of stations recorded,15009 effective P-wave traveltime data were selected from 2011 teleseismic *** obtained model showed that the Solomon Sea Plate subducted beneath the New Britain Island along the New Britain Trench at an angle of>70°and that the slab can be traced down to a depth of approximately 800 ***,we cannot observe a high-velocity anomaly exhibited by the subducted Solomon Sea Plate in the deep mantle at the Trobriand Trench,and the slab stopped at a depth of<200 *** double subduction of the Solomon Sea Plate strongly modified the subduction patterns of the early subducted Pacific and Australian plates in the mantle along the West Melanesian Trench and the Pocklington Trough,*** addition,the subducted Solomon Sea Plate induced the melting of the upper mantle to form a low-velocity anomaly,which provided the deep dynamic source for the expansion of the Bismarck *** on the joint consideration of the tomography results and a petrological analysis,the low-velocity anomalies beneath the Solomon Sea and Woodlark Basin are closely related to the early subduction of the Pacific and Australian Plates,respectively.

关键词： New Guinea-Solomon arc system traveltime tomography trench back-arc basin

Active Depths of Main Faults in the Ying-Qiong Basin Investigated by Multi-Scale Wavelet Decomposition of Bouguer Gravity Anomalies and Power Spectral Methods

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Journal of Ocean University of China 2022年第5期21卷 1174-1188页

作者： AN Long YU Chong GONG Wei LI Deyong xing junhui XU Chong ZHANG Hao Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Zhengyuan Digital City Construction Co. Ltd.Yantai 264670China

The Ying-Qiong Basin is located on the northwestern margin of the South China Sea and at the junction of the South China Block and the Indochina *** is characterized by complex geological *** existing seismic data in the study area is sparse due to the lack of earthquake *** of the limited source energy and poor coverage of seismic data,the knowledge of deep structures in the area,including the spatial distribution of deep faults,is ***,satellite gravity data cover the entire study area and can reveal the spatial distribution of *** on the wavelet multi-scale decomposition method,the Bouguer gravity field in the Ying-Qiong Basin was decomposed and reconstructed to obtain the detailed images of the first-to sixth-order gravitational *** incorporating the known geological features,the gravitational field responses of the main faults in the Ying-Qiong Basin were identified in the detailed fields,and the power spectrum analysis yielded the depths of 1.4,8,15,26.5,and 39 km for the average burial depths of the bottom surfaces from the first-to fifth-order detailed fields,*** four main faults in the Yinggehai Basin all have a large active depth range:fault A(No.1)is between 5 and 39 km,fault B is between 26.5 and 39 km,and faults C and D are between 15 and 39 ***,the depth of active faults in the Qiongdongnan Basin is relatively shallow,mainly between 8 and 26.5 km.

关键词： Yinggehai Basin Qiongdongnan Basin active depth of fault Bouguer gravity anomaly wavelet multi-scale analysis power spectrum