Seismic data coverage in ocean regions is sparse,and it is highly challenging to build long-term continuous seismic networks in the oceans due to the restrictions related to the shortage of instruments and great costs...Seismic data coverage in ocean regions is sparse,and it is highly challenging to build long-term continuous seismic networks in the oceans due to the restrictions related to the shortage of instruments and great costs.The lack of data coverage limits effective seismic imaging of deep mantle structures beneath the oceans,which cover 70%of the Earth’s surface.The newly developed Mobile Earthquake Recorder in Marine Areas by Independent Drivers(MERMAID)can drift with ocean currents at a specified depth while recording seismic signals.The Southern University of Science and Technology(SUSTech)launched 10 MERMAIDs in the South China Sea(SCS)in May 2021 that formed the South China Sea Floating Seismic Network(SCS-FSN).We analyzed the one-year-long records of the SCS-FSN,identifying 372 cataloged earthquakes and acquiring 1,015 high-quality travel time data.By analyzing the records of earthquakes with magnitudes above 7.0 and conducting synthetic waveform calculation,we found that,in addition to the epicentral distance and earthquake magnitude,the earthquake identification ability of the network is also affected by the focal mechanism,sea condition,seafloor relief,and MERMAID working state.Although the recognition rate of the SCS-FSN is only 16%for earthquakes with magnitudes above 5.5 and epicentral distances less than 90°,this network is expected to collect more than 5,000 high-quality travel time data during its five-year battery life.These new data will significantly improve the seismic data coverage,compensating for the lack of long-term continuous seismic network observations in the SCS.Most importantly,with this experiment,we are confident that setting up well-designed floating seismic networks in the world’s three oceans could solve the world-class problem of the lack of effective seismic data coverage beneath ocean regions.展开更多
Using films by Patricia Rozema and Igmar Bergman,“Lowering Human Hubris into the Sublime”reminds the reader that the particular in our lives is where the sublime performs.While we multitask and take for granted the ...Using films by Patricia Rozema and Igmar Bergman,“Lowering Human Hubris into the Sublime”reminds the reader that the particular in our lives is where the sublime performs.While we multitask and take for granted the world around us that supports our mythic assumptions,the particular objects and lives are actively present.In the two movies,the particular functions as a source of the sublime reminder and source of metaphor for stability and atrophy in everyday living.In one film an artist focuses the ordinary objects in everyday life while being disregarded by artists involved in the abstract.In the second film the particular behind the scenes works quietly to dismantle cultural beliefs for the people living the soon to be dated beliefs where opportunities for more inclusive community reside.展开更多
鉴于国内外海洋地震台网的缺乏,本文介绍了一种面向全球海域应用的漂浮式海底地震接收系统(mobile earthquake recording in marine areas by independent divers,MERMAID).针对潜浮式地震仪MERMAID浮标的研发过程,建立了浮标的总体设...鉴于国内外海洋地震台网的缺乏,本文介绍了一种面向全球海域应用的漂浮式海底地震接收系统(mobile earthquake recording in marine areas by independent divers,MERMAID).针对潜浮式地震仪MERMAID浮标的研发过程,建立了浮标的总体设计要求与典型工作循环流程,设计了液压式浮力调节系统、机械结构等,并对比分析了不同转速及负浮力下潜过程,最后进行了实验室压力检测和千岛湖湖试。试验结果表明,该浮标能在15MPa压力下保持良好的密封性与稳定性,利用水听器可以有效地采集到天然地震纵波(P波),同时计算各模块单个周期的能耗,以验证设计指标。展开更多
Background The market for new drugs and procedures is substantial, and companies will continue to earmark major sums for the development of new drugs for many years to come. Access to the most up-to-date knowledge is ...Background The market for new drugs and procedures is substantial, and companies will continue to earmark major sums for the development of new drugs for many years to come. Access to the most up-to-date knowledge is therefore essential for the pharmaceutical companies in the competitive race to develop new proprietary drugs. In recent years, the pharmaceutical industry continuously increased their outsourcing strategy展开更多
Informed by the framework of Halliday＇s Systemic Functional Grammar, this paper compares ＂The Little Mermaid＂ （1872） by Hans Christian Andersen and its parodic version ＂The Little Mer-persun＂ （1995） by James ...Informed by the framework of Halliday＇s Systemic Functional Grammar, this paper compares ＂The Little Mermaid＂ （1872） by Hans Christian Andersen and its parodic version ＂The Little Mer-persun＂ （1995） by James Finn Garner. Andersen＇s story creates gender stereotype by under-representing the heroine as an effectual Actor and Sayer but establishing the image of the hero as a powerful Actor and assertive Sayer. Garner＇s story, on the other hand, tends to subvert the traditional gender stereotype by representing the heroine as a more dynamic Actor and Sayer than the hero and by reversing the power relationship between the two. These differing characterizations reflect the two competing literary traditions and embedded ideologies of romanticist fairy tale genre and modem ＂politically-correct＂ parodic satire展开更多
1 In the crystal-clear waters near Talamone,Italy,an extraordinary sight awaits beneath the Mediterranean Sea's surface.Mermaids,towering giants and enormous sculptural eyes gaze upward from the ocean floor,creati...1 In the crystal-clear waters near Talamone,Italy,an extraordinary sight awaits beneath the Mediterranean Sea's surface.Mermaids,towering giants and enormous sculptural eyes gaze upward from the ocean floor,creating an otherworldly underwater gallery that serves a crucial environmental purpose.展开更多
基金supported by the NSFC Open Research Cruise (Cruise No. NORC2021-08)funded by Shiptime Sharing Project of the NSFC+1 种基金supported by the National Natural Science Foundation of China (Grant No. 41890814)the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
文摘Seismic data coverage in ocean regions is sparse,and it is highly challenging to build long-term continuous seismic networks in the oceans due to the restrictions related to the shortage of instruments and great costs.The lack of data coverage limits effective seismic imaging of deep mantle structures beneath the oceans,which cover 70%of the Earth’s surface.The newly developed Mobile Earthquake Recorder in Marine Areas by Independent Drivers(MERMAID)can drift with ocean currents at a specified depth while recording seismic signals.The Southern University of Science and Technology(SUSTech)launched 10 MERMAIDs in the South China Sea(SCS)in May 2021 that formed the South China Sea Floating Seismic Network(SCS-FSN).We analyzed the one-year-long records of the SCS-FSN,identifying 372 cataloged earthquakes and acquiring 1,015 high-quality travel time data.By analyzing the records of earthquakes with magnitudes above 7.0 and conducting synthetic waveform calculation,we found that,in addition to the epicentral distance and earthquake magnitude,the earthquake identification ability of the network is also affected by the focal mechanism,sea condition,seafloor relief,and MERMAID working state.Although the recognition rate of the SCS-FSN is only 16%for earthquakes with magnitudes above 5.5 and epicentral distances less than 90°,this network is expected to collect more than 5,000 high-quality travel time data during its five-year battery life.These new data will significantly improve the seismic data coverage,compensating for the lack of long-term continuous seismic network observations in the SCS.Most importantly,with this experiment,we are confident that setting up well-designed floating seismic networks in the world’s three oceans could solve the world-class problem of the lack of effective seismic data coverage beneath ocean regions.
文摘Using films by Patricia Rozema and Igmar Bergman,“Lowering Human Hubris into the Sublime”reminds the reader that the particular in our lives is where the sublime performs.While we multitask and take for granted the world around us that supports our mythic assumptions,the particular objects and lives are actively present.In the two movies,the particular functions as a source of the sublime reminder and source of metaphor for stability and atrophy in everyday living.In one film an artist focuses the ordinary objects in everyday life while being disregarded by artists involved in the abstract.In the second film the particular behind the scenes works quietly to dismantle cultural beliefs for the people living the soon to be dated beliefs where opportunities for more inclusive community reside.
文摘鉴于国内外海洋地震台网的缺乏,本文介绍了一种面向全球海域应用的漂浮式海底地震接收系统(mobile earthquake recording in marine areas by independent divers,MERMAID).针对潜浮式地震仪MERMAID浮标的研发过程,建立了浮标的总体设计要求与典型工作循环流程,设计了液压式浮力调节系统、机械结构等,并对比分析了不同转速及负浮力下潜过程,最后进行了实验室压力检测和千岛湖湖试。试验结果表明,该浮标能在15MPa压力下保持良好的密封性与稳定性,利用水听器可以有效地采集到天然地震纵波(P波),同时计算各模块单个周期的能耗,以验证设计指标。
文摘Background The market for new drugs and procedures is substantial, and companies will continue to earmark major sums for the development of new drugs for many years to come. Access to the most up-to-date knowledge is therefore essential for the pharmaceutical companies in the competitive race to develop new proprietary drugs. In recent years, the pharmaceutical industry continuously increased their outsourcing strategy
文摘Informed by the framework of Halliday＇s Systemic Functional Grammar, this paper compares ＂The Little Mermaid＂ （1872） by Hans Christian Andersen and its parodic version ＂The Little Mer-persun＂ （1995） by James Finn Garner. Andersen＇s story creates gender stereotype by under-representing the heroine as an effectual Actor and Sayer but establishing the image of the hero as a powerful Actor and assertive Sayer. Garner＇s story, on the other hand, tends to subvert the traditional gender stereotype by representing the heroine as a more dynamic Actor and Sayer than the hero and by reversing the power relationship between the two. These differing characterizations reflect the two competing literary traditions and embedded ideologies of romanticist fairy tale genre and modem ＂politically-correct＂ parodic satire
文摘1 In the crystal-clear waters near Talamone,Italy,an extraordinary sight awaits beneath the Mediterranean Sea's surface.Mermaids,towering giants and enormous sculptural eyes gaze upward from the ocean floor,creating an otherworldly underwater gallery that serves a crucial environmental purpose.
