Authors :
Mario Batubara; Musthofa Lathif; Ibnu Fathrio; Masa-yuki Yamamoto; Islam Hamama
Volume/Issue :
Volume 8 - 2023, Issue 8 - August
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/46c4v4pv
DOI :
https://doi.org/10.5281/zenodo.8344568
Abstract :
We report 2023 infrasound observations
derived from ambient noise of the microbaroms between
the north and south coasts of West Java province,
Indonesia. Measurements were conducted out serially
between May and August 2023, utilizing embedded
infrasound sensors. Our microbaroms studies
demonstrate that infrasound from the oceanic field
causes frequent atmospheric pressure fluctuations of
several millipascals at about 0.4 Hz. As a result, their
amplitude appears to be quite dominant from twilight
until the following morning, which is supposed to be
dependent on the emergence of the atmospheric sound
channels between the ground and the atmospheric level
at a specific altitude. Theses channels are affected by the
wind structure at top reflection point and atmospheric
vertical temperature. The structure of wind and
temperature in our geographical study, in the equatorial
region, were proven to explain and distinguish the
observed microbaroms by direct measurement of
standard meteorology. Finally, we propose that the usage
of our infrasound sensor will offer global complementary
results for monitoring upper atmospheric dynamics.
Keywords :
Microbaroms, infrasound, equatorial, vertical profile.
We report 2023 infrasound observations
derived from ambient noise of the microbaroms between
the north and south coasts of West Java province,
Indonesia. Measurements were conducted out serially
between May and August 2023, utilizing embedded
infrasound sensors. Our microbaroms studies
demonstrate that infrasound from the oceanic field
causes frequent atmospheric pressure fluctuations of
several millipascals at about 0.4 Hz. As a result, their
amplitude appears to be quite dominant from twilight
until the following morning, which is supposed to be
dependent on the emergence of the atmospheric sound
channels between the ground and the atmospheric level
at a specific altitude. Theses channels are affected by the
wind structure at top reflection point and atmospheric
vertical temperature. The structure of wind and
temperature in our geographical study, in the equatorial
region, were proven to explain and distinguish the
observed microbaroms by direct measurement of
standard meteorology. Finally, we propose that the usage
of our infrasound sensor will offer global complementary
results for monitoring upper atmospheric dynamics.
Keywords :
Microbaroms, infrasound, equatorial, vertical profile.
