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31.
Gas hydrate research has significant importance for securing world energy resources, and has the potential to produce considerable
economic benefits. Previous studies have shown that the South China Sea is an area that harbors gas hydrates. However, there
is a lack of systematic investigations and understanding on the distribution of gas hydrate throughout the region. In this
paper, we applied mineral resource quantitative assessment techniques to forecast and estimate the potential distribution
of gas hydrate resources in the northern South China Sea. However, current hydrate samples from the South China Sea are too
few to produce models of occurrences. Thus, according to similarity and contrast principles of mineral outputs, we can use
a similar hydrate-mining environment with sufficient gas hydrate data as a testing ground for modeling northern South China
Sea gas hydrate conditions. We selected the Gulf of Mexico, which has extensively studied gas hydrates, to develop predictive
models of gas hydrate distributions, and to test errors in the model. Then, we compared the existing northern South China
Sea hydrate-mining data with the Gulf of Mexico characteristics, and collated the relevant data into the model. Subsequently,
we applied the model to the northern South China Sea to obtain the potential gas hydrate distribution of the area, and to
identify significant exploration targets. Finally, we evaluated the reliability of the predicted results. The south seabed
area of Taiwan Bank is recommended as a priority exploration target. The Zhujiang Mouth, Southeast Hainan, and Southwest Taiwan
Basins, including the South Bijia Basin, also are recommended as exploration target areas. In addition, the method in this
paper can provide a useful predictive approach for gas hydrate resource assessment, which gives a scientific basis for construction
and implementation of long-term planning for gas hydrate exploration and general exploitation of the seabed of China. 相似文献
32.
线辣椒栽培要选择纯度较高,株型紧凑,综合抗性强,较耐寒,丰产性突出,市场前景广阔,消费者喜爱的优良品种。适宜渭北西部气候条件的优良品种有8819、98-1、2002、七寸红等。 相似文献
33.
宝鸡市近50年气候变化特征 总被引:2,自引:0,他引:2
选用宝鸡市11个气象站1961—2008年气温、降水和日照等气象要素资料统计分析,得出宝鸡近50a气候变化特征。年平均气温以0.238 o C/10a倾向率上升;冬季平均气温上升最快,线性倾向率为0.366 o C/10a;夏季平均气温升温幅度最小,仅为0.01 o C/10a。年降水量以31.187mm/10a的倾向率波动减少,主要由春季和秋季降水量减少造成。年日照时数以38.95h/10a的倾向率波浪式减少,以夏季减少趋势最明显,线性倾向率为-28.8h/10a。年日照百分率在39%~49%之间变化。 相似文献
34.
35.
北极航道的开通具有重大的地缘战略意义。北极航道地缘区域可从北极地区、航线影响范围内缓冲区、航线延伸区域三个维度考虑。本文以北极航道地缘影响区域作为空间依托,总结北极航道地缘政治格局的全球化和集团化特征,并以地缘距离和航运收益组合为依据,探索以国家为单位的政治行为体组合方式,提出北极航道地缘政治格局的立体式圈层结构:以北冰洋为中心的不同利益不同立场的由内向外依次排列的五层结构。根据对各圈层结构的航运利益、观念主张和政策制度分析,探讨各圈层内外部竞合关系,提出最内层的北极航道沿海国“内水化”主张和制度化管辖与其他圈层的“航行自由”如何平衡将是未来博弈的焦点,各圈层间和内部的竞合关系也将随资源、利益的诉求变化和进程的推动而变化。 相似文献