Long-term record of H2O2 in polar ice cores

• Main Authors: Neftel, A., Jacob, P., Klockow, D.
• Format: Text
• Language: unknown
• Published: Munksgaard 1986
• Subjects: 530 Physics; West Antarctica; Greenland; Byrd; Byrd Station; Antarc*; Antarctica; Dye 3; Dye-3; Greenland ice cores
• Online Access: https://dx.doi.org/10.48350/158747; https://boris.unibe.ch/158747/

At Dye 3 and Camp Century, Greenland, and at Byrd Station, West-Antarctica, ice cores were drilled to bedrock. They offer an archive of solid precipitation over the last 50.000 to 100,OOO years. H2O2 has been found to be one of the dominant trace components in the ice. We present a survey of the H2O2 levels in the three deep cores. In the Greenland ice cores the H2O2 level decreases with increasing depth and is extremely low during the last glaciation. In the Byrd core an H2O2 concentration spike is observed in the time period 6000 to 12,000 years before present. Possible explanations for the decreasing trend with age and depth and the drop during the Ice Age are discussed.