UH Hilo Center for Maunakea Stewardship - Research Library

Late quaternary geomagnetic secular variation from historical and (super 14) C-dated lava flows on Hawaii

Author:
Hagstrum, Jonathan T., Champion, Duane E.
Title:
Late quaternary geomagnetic secular variation from historical and (super 14) C-dated lava flows on Hawaii
Periodical:
Journal of Geophysical Research
Year:
1995
Volume:
100
Pages:
24393-24403
Subject:
Geology Mauna Kea Lake Waiau Geomagnetism secular variations
Summary:
A record of geomagnetic paleosecular variation (PSV) is constructed for the last 4400 years based on 188 sites in historic and (super 14)C-dated lava flows from Mauna Loa, Kilauea, and Hualalai Volcanoes on the island of Hawaii. It showed similar features to those recorded by sediments from Lake Waiau near the summit of Mauna Kea Volcano. Divergence of the inclination records with increasing age suggest that the Lake Waiau values at depths below 2 m have been affected by compaction-related inclination shallowing. The rate of PSV presented here is highly variable (less than 0.5 degrees/century to greater than 20 degrees/century), and a pronounced shift in inclination (25 to 40 degrees) occurred between ~ 1030 and ~ 975 years B.P.
Label:
Geology
Date:
1995
Collection:
Periodicals