アトランティスII海山の斜面の地殻音響パラメータにおける空間的変動の証拠

¹Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02540, USA.

|February 25, 2026

Abstract:

During a May 2023 cruise of the New England Seamount Acoustics Experiment, a near-surface airgun was fired at 1-min intervals along a nominally semi-circular track centered on the Atlantis II seamount. Airgun shots were recorded by four hydrophones on a short vertical line array moored on the seamount plateau, providing up-slope acoustic propagation coverage for the eastern half of the Atlantis II flank. Focusing on hydrophone recordings of the first flank bounce return, comparison with numerical acoustics simulations reveals evidence of spatial (latitude/longitude) variation in geoacoustic properties of the seamount flank.

キーワード:

海山音響伝播地殻音響特性空間的変動ニューイングランド海山

さらに関連する動画

07:59

Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities

Published on: January 6, 2023

4.3K

07:58

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

Published on: August 7, 2017

10.0K

関連する概念動画

$Influence of Earth's Curvature and Atmospheric Refraction on Leveling$ 01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

1.0K

During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...

1.0K

01:06

Echo

1.1K

The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...

1.1K

01:26

Unsoundness of Aggregate due to Volume Change

414

Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...

414

01:03

Precipitation Gravimetry

15.7K

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...

15.7K