E_4_19 — Mono Lake and Gothenburg Excursions: Short Geomagnetic Events

Geomagnetic excursions are brief, extreme departures of the Earth's magnetic field from its normal dipolar configuration — events during which the virtual geomagnetic pole (VGP) deviates by more than 40–45° from the geog

E_4_03 — Paleomagnetism & Geomagnetic Excursions

Earth's magnetic field periodically undergoes dramatic excursions and full polarity reversals, with profound physical consequences including weakened radiation shielding, increased UV exposure, and ozone depletion. The L

E_4_09 — Magnetic Pole Reversals and the Laschamp Event

Earth's magnetic field periodically undergoes geomagnetic reversals — events in which the north and south magnetic poles swap polarity. This has occurred at least 183 times in the last 83 million years, with the last ful

E_4_23 — Magnetic Field Strength History: Dipole Decay and Implications

Earth's magnetic field — generated by convective motion of liquid iron in the outer core (the geodynamo) — is not constant in strength. Over the past ~170 years of direct measurement (since Carl Friedrich Gauss's first s

O_1_13 — South Atlantic Anomaly: Geomagnetic Weakness and Radiation Belt Gap

The South Atlantic Anomaly (SAA) is the largest known weakness in Earth's magnetic field, centered over South America and the South Atlantic Ocean (roughly between Brazil and southern Africa), where the inner Van Allen r

O_1_16 — Geomagnetic-Consciousness Mechanism

The hypothesis that Earth's geomagnetic field influences human consciousness encompasses several distinct mechanisms: biogenic magnetite in the brain as a magnetoreceptor, Schumann resonance coupling with neural oscillat

O_1_02 — Magnetosphere, Solar Activity, and Earth's Shield

Earth's magnetic field is an invisible shield that makes complex life on the surface possible — without it, solar wind would strip away the atmosphere and sterilize the planet, as happened to Mars ~3.8 billion years ago

O_1_09 — Persinger's Tectonic Strain Theory and Geomagnetic Anomalies

Michael Persinger (1945–2018), a neuroscientist at Laurentian University (Sudbury, Ontario), developed the Tectonic Strain Theory (TST) — a hypothesis proposing that stress accumulating along geological fault zones produ

O_1_08 — Aurora Borealis and Geomagnetic Storms

The aurora borealis (northern lights) and aurora australis (southern lights) are luminous atmospheric phenomena caused by charged particles from the solar wind interacting with Earth's magnetosphere and exciting atmosphe

O_1_06 — Geomagnetic Anomalies at Ancient Megalithic Sites

A small but growing body of geophysical research has documented measurable electromagnetic and geomagnetic anomalies at several ancient megalithic sites, including the Rollright Stones (Oxfordshire, England), Carnac (Bri

O_1_03 — Geomagnetic Anomalies and Human Health Effects

Earth's geomagnetic field is not uniform — dramatic anomalies like the South Atlantic Anomaly (SAA) expose organisms and technology to increased radiation, while laboratory experiments have shown that weak magnetic field

ZF_2_03 — Marine Migration Patterns and Cetacean Intelligence

Marine animals execute some of the most extraordinary navigational feats in biology — humpback whales migrating 8,000+ km between polar feeding grounds and tropical breeding waters, sea turtles returning to their natal b

ZF_5_12 — Paleocene-Eocene Thermal Maximum: Ancient Anoxic Ocean Crisis

The Paleocene-Eocene Thermal Maximum (PETM), occurring approximately 55.8 million years ago (latest Paleocene), was one of the most dramatic and rapid climate change events in the Cenozoic, offering the closest geologica

ZF_4_08 — Ocean Acidification Paleoclimate Record

Ocean acidification — the decrease in seawater pH caused by absorption of atmospheric CO₂ — is not only a modern phenomenon but has occurred repeatedly throughout Earth's history, leaving distinctive signals in the geolo

E_3_10 — Clathrate Gun Hypothesis

The clathrate gun hypothesis proposes that warming of ocean waters or thawing of permafrost can destabilize methane clathrates (also called methane hydrates) — ice-like crystalline structures in which methane molecules a

E_2_13 — Paleocene-Eocene Thermal Maximum

The Paleocene-Eocene Thermal Maximum (PETM) — approximately 55.8 million years ago — was the most extreme rapid warming event of the past 66 million years and is widely studied as a deep-time analog for modern anthropoge

E_1_09 — Solar Storms and Miyake Events

The Sun periodically releases enormous bursts of energy — coronal mass ejections (CMEs) and solar proton events (SPEs) — that interact with Earth's magnetosphere and can have devastating consequences for technology-depen

G_4_27 — Schumann Resonance and Human Physiology: Evidence Assessment

The Schumann resonance — a global electromagnetic phenomenon at ~7.83 Hz fundamental and harmonics ~14.3, 20.8, 27.3, 33.8 Hz — is real, well-measured, and physically explained by lightning-driven oscillations in the Ear

O_1_00 — Geomagnetic Atmospheric: Subfolder Summary

O_1_10 — Carrington Event and Space Weather Threats to Earth

The Carrington Event of September 1–2, 1859 was the most intense geomagnetic storm in recorded history — caused by a massive coronal mass ejection (CME) from the Sun that struck Earth's magnetosphere approximately 17.6 h