Fig. 5 3-D model of the lake bottom and surrounding based on a Digital Terrain Model and aerial photos, with location of core TG-22; (a) X-ray image of core TG-22 with summary of palynology: while pollen from taiga forest are present throughout the core, hydrophytes disappear below 90–100 cm; (b) chirp-sonar seismic profile collected above the TG-22 site, indicating the presence of 2 different units (Gasperini et al., 2007).
