A Fractal Simulation Method for Simulating the Resource Abundance of Oil and Gas and Its Application

Mathematical Geosciences - In this study, a fractal simulation method for simulating resource abundance is proposed based on the evaluation results of the exploration risk and prediction technology...     

Factors influencing thermokarst lake development in Beiluhe basin,the Qinghai–Tibet Plateau

Thermokarst lake is a significant indicator of permafrost degradation. However, the evaluation of thermokarst lake development is very difficult through physical mechanism analysis because the development is influenced by many factors. In the present study, the factors influencing thermokarst lake development were investigated from the perspective of frozen soil and the geographical environment. The influences of six factors on thermokarst lake development in Beiluhe basin, located in the hinterland of the Qinghai–Tibet Plateau, were analyzed: permafrost type, ground temperature, vegetation type, soil type, hydrogeological type, and slope. Sensitivity coefficients were calculated for these factors using statistical methods. The results show that thermokarst lake development was influenced by the analyzed factors as follows: permafrost > soil type > ground temperature > hydrogeological type. Furthermore, 80.1% of the study area was highly sensitive to thermokarst lake development. Overall, thermokarst lake development in the Beiluhe basin was thoroughly evaluated based on sensitivity factors and an established statistical evaluation method. The method detailed in this paper provides a reference for evaluating the likelihood and severity of thermokarst lake development.     

Variability of Prorocentrum donghaiense response to allelopathic action from Alexandrium pacificum in laboratory culture

The dinoflagellates Alexandrium pacificum and Prorocentrum donghaiense are two well-known harmful algal blooms (HABs)-forming species, both were usually found i...     

WWS-1小型数字双无定向磁力仪

wws-1型数字双无定向磁力仪由北京地质仪器厂批量生产。仪器采用双无定向磁系,增强了抗磁场干扰能力,采用负反馈系统,用三位半数字表直读磁场值,读数迅速。仪器工作稳定、可靠。同国外同用途仪器测量磁参数数据可比对。仪器用于高精度岩石磁性测量及古地磁标本测量。     

抚顺西露天矿区滑坡易发性评价与时空特征分析

近年抚顺西露天矿矿区滑坡在规模、 活动频率以及空间发育位置等方面均与矿区历史滑坡呈现出较明显的时空差异性,为矿区未来治理提出新的挑战.故基于改进频率比模型,选择人类工程活动(主要是采矿工程扰动)和工程地质条件两类致灾因素,对由矿区滑坡时空差异所导致的易发性变化进行研究.结果表明:影响矿区滑坡灾害的主要因素包括坡体结构、...