Qingdao Institute of Marine Geology

Improved estimation of lake storage variation via DEM reconstruction integrating elevation and morphological constraints

High-quality Digital Elevation Models (DEMs) are essential for accurately estimating lake storage variations, but the high cost of in-situ measurements limits their large-scale application. Reconstructing DEMs from remote sensing-derived lake contours is a promising low-cost alte...

Microscopic experimental investigation into the effects of silt on gas hydrate formation in sandy marine sediments

Marine gas hydrate reservoirs are rich in fine-grained silt, which substantially affects gas hydrate occurrence patterns and sediment pore characteristics. The presence of silt is a key factor that controls gas production efficiency and sand production behavior during hydrate exp...

Pathfinder-Based Analysis of Capacity Matching and Bottleneck Migration Along Evacuation Chains in Underground Commercial Complexes

Underground commercial complexes form a multi-stage evacuation chain linking horizontal transfer, vertical discharge, and exit allocation. Pathfinder simulations examined occupant-profile composition, stair width, corridor configuration, and pedestrian diversion through single-fa...

Biogenic Magnetite Indicating Millennial‐Scale Evolution of Bottom Water Oxygenation in the Northern South China Sea Since About 30 ka

Abstract Previous studies indicate that bottom‐water oxygenation (BWO) during glacial–interglacial transitions varies complexly, particularly on millennial timescales. Here we reconstruct millennial‐scale BWO variations since ∼30 ka using biogenic magnetite preserved in sediments...

Paleomagnetic Reconstruction of the Early Triassic Paleogeographic Position of the South Yellow Sea and Its Geological Significance

Most studies on the Early Triassic paleomagnetism of the Yangtze Block (YB) have concentrated on the Western to Middle parts, but the South Yellow Sea (SYS) in the Eastern YB (EYB) is relatively lacking. To ascertain the paleogeographic position of the SYS, we isolated the charac...