Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Geophysical images crossing South to North across the meadow: a P-wave velocity model along S4 (RMS = 1.4 ms); b electrical resistivity model along E4 (absolute error = 3.3%); c radar reflection image along R4. Black solid and dashed lines (a–b) indicate boundaries interpreted from that data set whereas semi-transparent lines indicate boundaries interpreted from other lines. Grey box with “1” at approximately 110 m indicates tie point with Line 1. See Fig. 3 for line locations
