Boulder Creek, California, USA (37.1°N, 122.1°W)
HeartMath Institute, Global Coherence Initiative
Right now
California: 72 · global avg: 53
Louder than: Tomsk (35), Etna (35), Cumiana (35), Eskdalemuir (65)
Quieter than: Alberta (75)
Latest Spectrogram
Hey there! This past week at the California station was pretty mellow, with the Schumann Resonance staying around a consistent 74. It was a pretty quiet period overall, with no big spikes or unusual activity to report.
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Open aimag.me30-day hourly activity
Each cell is one UTC hour. Click any active cell to explore that day.
Notable events (last 30 days)
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95
View day →2026-05-15
The rightmost portion of the spectrogram displays intense, wide horizontal bands of pink and yellow across the 0-40 H…
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85
View day →2026-05-05
The rightmost portion of the spectrogram displays significant brightening across the primary Schumann resonance bands…
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83
View day →2026-04-23
The rightmost portion of the spectrogram displays elevated intensity levels, shifting from blue to pink and yellow ac…
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79
View day →2026-05-08
The rightmost portion of the spectrogram displays elevated intensity levels, characterized by a shift from blue to pi…
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75
View day →2026-05-19
The rightmost portion of the spectrogram shows sustained, high-intensity activity across the primary Schumann harmoni…
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73
View day →2026-04-26
The rightmost portion of the spectrogram displays elevated intensity levels across all monitored Schumann harmonics. …
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72
View day →2026-05-22
The rightmost section of the spectrogram shows sustained, high-intensity yellow bands at the fundamental and second h…
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72
View day →2026-05-21
The rightmost portion of the spectrogram shows high-intensity, persistent activity across the lower frequency bands. …
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65
View day →2026-05-20
The rightmost portion of the chart exhibits clear, bright horizontal bands corresponding to the primary Schumann reso…
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65
View day →2026-05-18
The rightmost portion of the spectrogram shows consistent, moderate-to-high intensity across the first three Schumann…
Last 14 days
Quick scan of recent activity — tap a day for the full check-in.
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Open calendarGCI001 — heart of the global coherence network
GCI001 is part of HeartMath Institute's Global Coherence Initiative (Boulder Creek, California), a network designed to monitor how geomagnetic activity correlates with human physiology and collective coherence.
Unlike traditional academic stations, GCI sites are tuned for wellness research — exploring how magnetic field fluctuations affect sleep, mood, and heart rate variability.
Its daily spectrograms capture both Schumann resonance harmonics and ultra-low-frequency (ULF) activity, giving a holistic picture of the local electromagnetic environment. Visit nocc.heartmath.org
Trust & authority
HeartMath Institute, Global Coherence Initiative
Operating since 2008 · 18 years of continuous monitoring
Frequently asked questions
How does GCI001 measure Schumann resonance?
GCI001 uses a magnetometer tuned for ULF/ELF frequencies (0–50 Hz). It produces a daily 24-hour spectrogram showing Schumann harmonics alongside ultra-low-frequency activity relevant to wellness research.
Why is GCI001 important to our network?
GCI001 is part of HeartMath Institute's Global Coherence Initiative, a network specifically designed to study how geomagnetic activity correlates with human physiology. It brings a wellness-research perspective absent from purely academic stations.
When was its last major event?
Check the Notable events section above — it lists the top 10 highest-score events at GCI001 from the last 30 days, each linked to the full daily report.
How reliable is the data?
GCI001 is operated by the HeartMath Institute, a nonprofit research organization studying the interconnection between human physiology and Earth's magnetic field. The Global Coherence Initiative has been running since 2008 and publishes peer-reviewed research.
Where does the raw data come from?
Raw daily spectrograms come from nocc.heartmath.org. We fetch the latest plot once per day after publication. Visit heartmath.org/gci for the full Global Coherence Initiative program and research.
