Data from lake cores from lakes in northern Seward Peninsula, Alaska

In 2009 and 2010, we extracted sediment cores from seven key study lakes on the NW Seward Peninsula. Various physical, chemical and biological properties were measured including grain size, magnetic susceptibility, macrofossils, %TOC, del13C, del15N, % biogenic silica, grain size, and composition using smear slides.2009年至2010年，我们从苏厄德半岛西北部的7处重点研究湖泊中采集了沉积物岩芯。通过涂片玻片法，我们测定了一系列物理、化学及生物学指标，包括粒度、磁化率、大化石、总有机碳占比（%TOC）、碳稳定同位素比值（δ13C）、氮稳定同位素比值（δ15N）、生物硅占比、粒度以及沉积物组成。