Funding for this research was provided by:
Directorate for Geosciences (1417970, 1811737, 0949072)
U.S. Geological Survey (G15AC00202, G14AC00149, G18AP00035, G19AS00033)
Received: 11 August 2020
Accepted: 7 October 2020
First Online: 7 November 2020
: We declare that none of the authors have any competing interest in this publication.