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Earth's Magnetic Field Experienced a Drastic Weakening 2,200 Years Ago

Дослідження показали, що магнітне поле Землі зазнало суттєвих змін близько 2200 років тому. Photo: НВ — Техно

Analyzing the Magnetic Properties of Ancient Artifacts

A study published in the journal Archaeometry has uncovered new insights into stamped handles of Rhodian amphorae and local vessels unearthed during excavations in the City of David, the Jewish Quarter, and the Givati site. These artifacts date back to the 3rd–1st centuries BCE. An international team of researchers also examined the magnetic signatures of these objects, which point to significant historical events.

Key Findings of the Research

According to the study, the Earth's magnetic field in the Eastern Mediterranean weakened sharply during the first half of the 2nd century BCE, losing more than 30% of its strength over roughly 50 years. This decline may have influenced pottery production, including the HP06 jar found in the foundation of a defensive ramp at the Givati site. Magnetic measurements confirmed that this jar was made later, dating it to the end of the 2nd century BCE, casting doubt on its connection to the Acra fortress built by Antiochus IV Epiphanes around 167 BCE.

The HP06 ceramic is typically dated to no earlier than 130 BCE, further highlighting chronological discrepancies. Notably, Rhodian amphorae were stamped with the name of an official appointed for a single year, offering a glimpse into the administrative practices of the era.

  • The magnetic pattern remains consistent over distances of at least 1,500 kilometers.
  • Reference curves can be used to date archaeological finds from Egypt to Anatolia.

This research opens up new possibilities for understanding the history and development of the Eastern Mediterranean, particularly during a period when the magnetic field underwent significant changes.

These results could substantially alter our understanding of the chronology of archaeological finds in the region and the administrative practices of ancient civilizations. Studying the magnetic characteristics of artifacts provides fresh avenues for further analysis of historical events in the Eastern Mediterranean and their impact on the material culture of the time.

Understanding the shifts in the Earth's magnetic field can provide valuable context for other archaeological discoveries. For instance, a recent excavation in Israel revealed a cave that holds secrets about early human life dating back 300,000 years. This find sheds light on the complexities of human existence and adaptation over millennia, paralleling the historical insights gained from the study of ancient artifacts. To explore this fascinating connection, visit the remarkable discoveries in Israel.