We examined sediment samples from twenty-four stations in the Indo-Pacific warm pool(IPWP)region. Our objective is to provide a better understanding of changes in the IPWP and related tropical climatic phenomena such ...We examined sediment samples from twenty-four stations in the Indo-Pacific warm pool(IPWP)region. Our objective is to provide a better understanding of changes in the IPWP and related tropical climatic phenomena such as East Asian-Australian monsoon and El Ni(?)o-Southern Oscillation(ENSO),through improving spatial coverage of proxy records.In order展开更多
空分设备下塔、上塔、粗氩塔的不同精馏工况影响氩馏分流量的因素不同,使得氩馏分流量的调节方法也不同。以马钢20000 m 3/h液氧内压缩流程空分设备与35000 m 3/h氧气外压缩流程空分设备为例,详细分析空分设备下塔、上塔、粗氩塔不同精...空分设备下塔、上塔、粗氩塔的不同精馏工况影响氩馏分流量的因素不同,使得氩馏分流量的调节方法也不同。以马钢20000 m 3/h液氧内压缩流程空分设备与35000 m 3/h氧气外压缩流程空分设备为例,详细分析空分设备下塔、上塔、粗氩塔不同精馏工况对氩馏分流量的不同影响因素,介绍20000 m 3/h空分设备热开车粗氩塔投运阶段、35000 m 3/h空分设备正常运行变负荷状态的氩馏分流量调节方法运用实例。展开更多
Based on a quantitative analysis of planktonic foraminifera in two gravity cores (17928 and 17954), the history of the upper-water structure of the eastern and western slopes of the South China Sea (SCS) over the last...Based on a quantitative analysis of planktonic foraminifera in two gravity cores (17928 and 17954), the history of the upper-water structure of the eastern and western slopes of the South China Sea (SCS) over the last 220 Ka was reconstructed using the transfer function technique. Our results show that lower sea surface temperature (SST) and shallower depth of thermocline (DOT) exist at Core 17928, off Luzon, in the glacial periods; on the contrary, the same situation turned up in the interglacial at Core 17954, off Vietnam. These changes of the upper-water column structure in the two areas are induced by coastal up-welling, which in turn is driven by monsoons, namely, winter monsoon leads to upwelling at the eastern slope, and summer monsoon gives birth to upwelling on the western slope. Moreover, the intensity of upwellings is also closely related to the evolution of the East Asian monsoon. Therefore, we assume that the changes of the upwelling in the two sites indicate strengthenning of winter and展开更多
文摘We examined sediment samples from twenty-four stations in the Indo-Pacific warm pool(IPWP)region. Our objective is to provide a better understanding of changes in the IPWP and related tropical climatic phenomena such as East Asian-Australian monsoon and El Ni(?)o-Southern Oscillation(ENSO),through improving spatial coverage of proxy records.In order
文摘空分设备下塔、上塔、粗氩塔的不同精馏工况影响氩馏分流量的因素不同,使得氩馏分流量的调节方法也不同。以马钢20000 m 3/h液氧内压缩流程空分设备与35000 m 3/h氧气外压缩流程空分设备为例,详细分析空分设备下塔、上塔、粗氩塔不同精馏工况对氩馏分流量的不同影响因素,介绍20000 m 3/h空分设备热开车粗氩塔投运阶段、35000 m 3/h空分设备正常运行变负荷状态的氩馏分流量调节方法运用实例。
基金This work was supported by the National Natural Science Foundation of China (Grant Nos. 49732060, 49776290 and 49776289).
文摘Based on a quantitative analysis of planktonic foraminifera in two gravity cores (17928 and 17954), the history of the upper-water structure of the eastern and western slopes of the South China Sea (SCS) over the last 220 Ka was reconstructed using the transfer function technique. Our results show that lower sea surface temperature (SST) and shallower depth of thermocline (DOT) exist at Core 17928, off Luzon, in the glacial periods; on the contrary, the same situation turned up in the interglacial at Core 17954, off Vietnam. These changes of the upper-water column structure in the two areas are induced by coastal up-welling, which in turn is driven by monsoons, namely, winter monsoon leads to upwelling at the eastern slope, and summer monsoon gives birth to upwelling on the western slope. Moreover, the intensity of upwellings is also closely related to the evolution of the East Asian monsoon. Therefore, we assume that the changes of the upwelling in the two sites indicate strengthenning of winter and
