Fig. 5.
a Vertical component magnetic anomaly over Kiirunavaara iron mine, Sweden (adapted from Sundararajan et al. (1985), p 564), b–d derived anomalies through the second-, third-, and fourth-order horizontal derivatives
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.