Lake Pavin History, geology, biogeochemistry, and sedimentology of a deep meromictic maar lake

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Fig. 6.15 GPR section near parallel to ERT L1 section (Zero is near
Pavin crater and 1350 is near Costes outcrop). Two velocities are
applied (0–540 m: 0.0736 m/ns; 540–1340 m: 0.0582 m/ns) because of

lateral velocity variation revealed by CMP. As no topographic correc-

tion is made, the zero depth is the ground surface

6 Characterization of Phreatomagmatic Deposits from the Eruption of the Pavin Maar (France)