Examples of paleo-liquefaction in Bangladesh

Reconstruction of the Central Zagros paleo climate and paleo environment

Introduction The study of lake sediments has been widely used in recent decades to identify past climate and environmental changes. Lake basins have significant spatial and temporal patterns and provide valuable evidences of physical and chemical changes. However, in general, the climate of the Holocene period has been more stable and uniform than previous glacial and interglacial periods. How...

Analysis of river sediments in the paleo- Meyghan basin

Introduction The territory of central Iran is now affected by the hot and dry climate. But, several evidences, such as the extreme erosion of running waters, huge alluvial fans, wide alluvial terraces, and flood deposits indicate colder and wetter climate in the territory (Ghahroodi Tali, 2011: 3). The rivers belong to the most important parts of the sedimentary basin. In fact, the rivers are...

Interpreting Modern and Paleo-Environments by Analysis of Water-Stress in Xylem: Examples from Nebraska and Arkansas

Investigation of Liquefaction Mechanism in Double Sand Lenses

In many cases of heavy earthquakes, liquefaction has resulted in serious damages. Existing anisotropy in soil layers results  in some difficulties to realize the reason for these phenomena. Loose sand lenses buried in fine soils are one of the cases which may result in these problems and as a weak point during the earthquake can cause this phenomenon. In this paper, using FLAC 2D software, doub...

Kinetics of Coal Liquefaction

Information on t h e r a t e s o f coa l d i s s o l u t i o n which i s needed i n t h e design o f r e a c t o r s i n a c o a l l i q u e f a c t i o n p l a n t has been very l i m i t e d ; t h e r e f o r e , mcthods a r e needed by which d i s s o l u t i o n r a t e d a t a can be ex t r apo la t ed t o o t h e r o p e r a t i o n cond i t ions . In t h i s s e c t i o n , t h e r a t e...