Mesospheric pressure source from the 2022 Hunga, Tonga eruption excites 3.6-mHz air-sea coupled waves

Tonegawa, Takashi; Fukao, Yoshio

doi:10.1126/sciadv.adg8036

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…Acoustic waves with a period of ~5 min are thus often generated by energetic atmospheric blasts. A recent analysis of HTHH air and seafloor pressure spectrograms by Tonegawa & Fukao (2023) also identified long-continuing waves at frequencies near 3.6 mHz (period of ~4.6 min), which bear a close resemblance to the trailing waves observed in our satellite imagery. They argue that these waves represent the resonant coupling of the main Lamb wave and thermospheric gravity waves that propagate horizontally at the sound speed.…”

Section: Lamb Waves From the Last Major Explosionsupporting

confidence: 71%

One-Minute Resolution GOES-R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga-Hunga Ha'apai Eruptions on 15 January 2022

Horváth

Vadas

Stephan

et al. 2023

Preprint

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We use high temporal-resolution mesoscale imagery from the Geostationary Operational Environmental Satellite-R (GOES-R) series to track the Lamb and gravity waves generated by the January 2022 Hunga Tonga-Hunga Ha’apai eruption. The 1-min cadence of these limited area (~1,000x1,000 km) brightness temperatures ensures an order of magnitude better temporal sampling than full-disk imagery available at 10-min or 15-min cadence. We show that previous studies using the low-cadence full-disk data considerably overestimated the horizontal wavelength (~400–500 km) and period (~20–30 min) of the Lamb wave due to spatiotemporal aliasing. The 1-min imagery reveals a leading Lamb wave with a wavelength of only ~130 km and trailing waves with even shorter wavelengths of ~40–80 km. The characteristic propagation speed is estimated at ~315±15 m s, resulting in typical periods of 2–7 min. From the time of appearance of the first detectable Lamb wave, we derive an emission time of ~04:07 UTC for the primary pressure pulse. Weaker Lamb waves were also emitted by the last major eruption at ~08:40–08:45 UTC, which were, however, only identified in the near field but not in the far field. We also noted wind effects, such as mean flow advection and critical level filtering in the propagation of concentric gravity wave rings and observed gravity waves traveling near their theoretical maximum speed.

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Section: Lamb Waves From the Last Major Explosionsupporting

confidence: 71%

One-Minute Resolution GOES-R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga-Hunga Ha'apai Eruptions on 15 January 2022

Horváth

Vadas

Stephan

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Acoustic waves with a period of ∼5 min are thus often generated by energetic atmospheric blasts. A recent analysis of HTHH air and seafloor pressure spectrograms by Tonegawa and Fukao (2023) also identified long-continuing waves at frequencies near 3.6 mHz (period of ∼4.6 min), which bear a close resemblance to the trailing waves observed in our satellite imagery. They argue that these waves represent the resonant coupling of the main Lamb wave and thermospheric gravity waves that propagate horizontally at the sound speed.…”

supporting

confidence: 72%

One‐Minute Resolution GOES‐R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga‐Hunga Ha'apai Eruptions on 15 January 2022

Horváth,

Vadas,

Stephan

et al. 2024

JGR Atmospheres

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We use high temporal‐resolution mesoscale imagery from the Geostationary Operational Environmental Satellite‐R (GOES‐R) series to track the Lamb and gravity waves generated by the 15 January 2022 Hunga Tonga‐Hunga Ha'apai eruption. The 1‐min cadence of these limited area (∼1,000×1,000 km2) brightness temperatures ensures an order of magnitude better temporal sampling than full‐disk imagery available at 10‐min or 15‐min cadence. The wave patterns are visualized in brightness temperature image differences, which represent the time derivative of the full waveform with the level of temporal aliasing being determined by the imaging cadence. Consequently, the mesoscale data highlight short‐period variations, while the full‐disk data capture the long‐period wave packet envelope. The full temperature anomaly waveform, however, can be reconstructed reasonably well from the mesoscale waveform derivatives. The reconstructed temperature anomaly waveform essentially traces the surface pressure anomaly waveform. The 1‐min imagery reveals waves with ∼40–80 km wavelengths, which trail the primary Lamb pulse emitted at ∼04:29 UTC. Their estimated propagation speed is ∼315 ± 15 m s−1, resulting in typical periods of 2.1–4.2 min. Weaker Lamb waves were also generated by the last major eruption at ∼08:40–08:45 UTC, which were, however, only identified in the near field but not in the far field. We also noted wind effects such as mean flow advection in the propagation of concentric gravity wave rings and observed gravity waves traveling near their theoretical maximum speed.

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“…After the volcanic eruption, the generated Lamb waves propagated at the boundary of air and solid Earth, and traveled around the Earth several times (Amores et al., 2022; Lin et al., 2022; Omira et al., 2022; Otsuka, 2022). A few studies focused on the effect of Lamb wave on the ocean (Jia & Minnett, 2023; Lynett et al., 2022; Ravanelli et al., 2023; Tonegawa & Fukao, 2023): however, the study of that on far‐field groundwater is limited.…”

Section: Introductionmentioning

confidence: 99%

Far‐Field Groundwater Response to the Lamb Waves From the 2022 Hunga‐Tonga Volcano Eruption

Zhang,

Chen,

Zhong

et al. 2024

Geophysical Research Letters

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On 15 January 2022, the largest eruption of the Hunga‐Tonga volcano in recorded history produced a plume registered by multi‐parametric instruments around the world. However, the far‐field hydrogeological responses to Lamb waves from this eruption remain underexplored. We studied the responses of groundwater to the volcanic eruption in the far‐field over 8,700 km, including 274 wells. Results show that the Lamb waves with a speed of 316 m/s affects the groundwater system, leading to similar fluctuations in well water level (WL) and opposite phase fluctuation in borehole strain. Different wells exhibit diverse responses in WL amplitudes, possibly for heterogeneities in local aquifer systems. Gain values of 5 wells that simultaneously measure atmospheric pressure, borehole air pressure, borehole strain and WL are consistent with results obtained through cross‐power spectrum estimation. This work demonstrates a novel response in far‐field groundwater systems induced by Lamb waves and expects application for aquifer parameter estimation.

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Mesospheric pressure source from the 2022 Hunga, Tonga eruption excites 3.6-mHz air-sea coupled waves

Cited by 5 publications

References 29 publications

One-Minute Resolution GOES-R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga-Hunga Ha'apai Eruptions on 15 January 2022

One-Minute Resolution GOES-R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga-Hunga Ha'apai Eruptions on 15 January 2022

One‐Minute Resolution GOES‐R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga‐Hunga Ha'apai Eruptions on 15 January 2022

Far‐Field Groundwater Response to the Lamb Waves From the 2022 Hunga‐Tonga Volcano Eruption

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