Ambient Microseism

geophysical · 37 views
geophysicalstochastic

What It Is

IU.ANMO long-period vertical (1 sps) --- ocean-generated microseism noise at 0.1-0.3 Hz, 6-hour quiet period with seasonal/storm modulation (IRIS CC0)

Interpretation

Standard analysis sees: heavy-tailed; left-skewed; red spectrum (low-frequency / 1-over-f power); nonstationary / drifting. The atlas finds no named structure, but the source is distinctively extreme on AutoRegressive:ar_coef_2 (-4.3z) — beyond what the standard bank predicts for it. It sits beside Earthquake P-wave in the atlas (standard-bank rank 20) — a neighbor conventional features miss.

What standard analysis sees
tail heaviness0.90
asymmetry0.10
occupancy0.33
short-range corr0.59
long-range memory0.55
spectral colour0.10
periodicity0.65
complexity0.54
time-irreversibility0.20
volatility clustering0.60
multifractality0.58
dimensionality0.65
nonstationarity0.98
What the atlas adds
Atlas-extreme metrics the standard bank can’t predict for this source
AutoRegressive:ar_coef_2-4.3zbank-miss 1.6σ
Dodecagonal (Stampfli):pisot_triplet_coherence+4.1zbank-miss 1.4σ
Continued Fraction:log_khintchine_mean+3.5zbank-miss 1.6σ
Ulam Spiral (Square):polynomial_concentration+2.3zbank-miss 1.7σ

Composition

dtypefloat64
range[-1686, 2603]
unique values1607 / 16384
mean ± std564 ± 289

Render Gallery

Atlas Position

Nearest neighborDistance
EEG Resting3.85cross-origin
Earthquake P-wave3.94
EEG Eyes Closed4.11cross-origin

Open in Atlas →

Which Geometries Light Up

Ammann-Beenker (Octagonal)Ammann-Beenker (Octagonal):convergent_profilerank 1/3070.9489
AutoRegressiveAutoRegressive:ar_coef_2rank 306/307-2.7887
Catch24Catch24:SC_FluctAnal_2_rsrangefit_50_1_logi_prop_r1rank 2/3070.8160
Catch24Catch24:DN_OutlierInclude_p_001_mdrmdrank 3/3070.3714
Continued FractionContinued Fraction:log_khintchine_meanrank 2/3071.9653
Dodecagonal (Stampfli)Dodecagonal (Stampfli):pisot_triplet_coherencerank 2/3070.5807
Julia SetJulia Set:escape_entropyrank 1/3074.5267
Level StatisticsLevel Statistics:wd_classificationrank 4/3070.2684
Möbius-S³Möbius-S³:sector_transition_entropyrank 5/3070.6098
Ulam Spiral (Square)Ulam Spiral (Square):radial_dispersionrank 1/3070.8887
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