以青岛海域浒苔藻体中光合活性较强的青岛奥帆基地A赛区南侧海域水表漂浮藻体和团岛湾海域的泥表沉降藻体为研究对象,通过叶绿素荧光技术配合氧电极技术研究了它们的光合作用情况.结果表明,虽然漂浮藻体光合活性较强,但潜在光合活性明显低于正常值,而泥表藻体的光合活性极弱,表明目前该海域的漂浮浒苔藻体已受到了较严重的环境胁迫,泥表藻体已经死亡或正处于死亡的边缘.另一方面,实验室培养的结果表明,团岛湾海域中沉降至
Coseismic water level changes which may have been induced by the Wenchuan MS8.0 earthquake and its 15 larger aftershocks(MS≥5.4) have been observed at Tangshan well.We analyze the correlation between
We systematically analyze coseismic responses and post-seismic characteristics of groundwater levels in the Three Gorges well-network to the MS8.0 Wenchuan earthquake on 12 May 2008.The results indica
The diurnal variation of the geomagnetic vertical component is exhibited mainly by changes of phase and amplitude before strong earthquakes.Based on data recorded by the network of geomagnetic observa
Teleseismic body wave traveltime tomography is used to inverse the three-dimensional seismic velocity structure beneath Shizigou in the western Qaidam basin.The travel time are picked from the continu
The two one-state-variable, rate-and state-dependent friction laws, i.e., the slip and slowness laws, are compared on the basis of dynamical behavior of a one-degree-of-freedom spring-slider model thr
The outline and typical characteristics of damages to building in Jiangyou city and Anxian county(intensity VⅢ), Mianyang city and Deyang city(intensity VII) are introduced in the paper.The damage rat
The seismicity of Longmenshan fault zone and its vicinities before the 12 May 2008 Wenchuan MS8.0 earthquake is studied.Based on the digital seismic waveform data observed from regional seismic networ
Dozens of >M5, hundreds of >M4, and much more >M3 aftershocks occurred after the 2008/05/12 Wenchuan earthquake, which were well recorded by permanent and portable seismic stations. After relocated wi
Here we used the VLF signal data received by the DEMETER satellite, transmitted from various ground VLF transmitters which are located around China, to study the changes in the signal to noise ratio (