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A Climatic Sequence Stratigraphic Model in the Terrestrial Lacustrine Basin:A Case Study of Green River Formation,Uinta Basin,USA 被引量:4
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作者 WANG Junling ZHENG Herong +3 位作者 XIAO Huanqin ZHONG Guohong Ronald STEEL YIN Peigui 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2009年第1期130-135,共6页
In recent years, with the development of terrestrial sequence stratigraphy, more attention has been focused on the study of the terrestrial lacustrine sequence stratigraphic model globally. Different viewpoints are pr... In recent years, with the development of terrestrial sequence stratigraphy, more attention has been focused on the study of the terrestrial lacustrine sequence stratigraphic model globally. Different viewpoints are preferred by researchers. Under the guidance of the theory of sequence stratigraphy, the findings of this paper indicate that climate is a major factor controlling the formation of the fourth-order sequence, based upon the study of the sequence stratigraphy in the Green River Formation of the Uinta basin in the USA. It also divides the fourth-order sequence in the terrestrial lacustrine basin into two system tracts: the wet (rising) half-cycle and the dry (falling) half- cycle, establishing a new-style fourth-order sequence stratigraphic model for the terrestrial lacustrine basin, that is, the climate-genetic sequence stratigraphic model. As a result, the theory of sequence stratigraphy is greatly enriched. 展开更多
关键词 CLIMATE fourth-order sequence sequence stratigraphic model terrestrial lacustrine basin Green River formation Uinta basin
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高阶紧致格式在非线性数值模拟中的应用
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作者 吕红 赵士奇 卜忱 《舰船科学技术》 北大核心 2014年第11期86-91,共6页
对比分析迎风型格式及中心耗散格式优劣性,采用傅里叶分析方法分析显式格式及紧致格式在波数空间可准确模拟的波数范围。通过编程研究6种紧致格式,其中为保证紧致格式在内点及边界点的一致性,采用高精度边界格式,加入了滤波运算和采用... 对比分析迎风型格式及中心耗散格式优劣性,采用傅里叶分析方法分析显式格式及紧致格式在波数空间可准确模拟的波数范围。通过编程研究6种紧致格式,其中为保证紧致格式在内点及边界点的一致性,采用高精度边界格式,加入了滤波运算和采用更小的CFL数来控制紧致格式的稳定性。数值试验表明,中心紧致格式有更小的耗散误差及色散误差;通过4阶Pade格式计算模型绕流,验证了边界处理的正确性,也更加认识到紧致格式有非常严格的稳定性限制。 展开更多
关键词 数值模拟 高阶紧致格式 滤波运算 4阶pade格式
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