Sea surface reflection from satellite images showing solitary wave fronts
Sea surface reflection from satellite images showing solitary wave fronts, with location and station map of Dongsha Atoll as insets. Credit: Shaddox et al., 2021, Figure 1c
Source: AGU Advances

Problems from coastal erosion to climate dynamics require a better handle on ocean wave phenomena. Satellites image the surface expression of ocean waves. However, there are coverage limits, and solid earth recordings can provide complementary constraints for ocean and surface dynamics. Here, Shaddox et al. [2021] expand prior environmental seismology analysis and focus on solitary ocean waves passing by a near-ideal test setting, an atoll in the South China Sea which is known to experience large amplitude wave activity. By combing data from a permanent borehole seismometer, temporary stations, satellites and ocean sensors, the authors find tantalizing evidence for the detection of the subtle tilting that might be expected from the ocean-land interactions around the island. Similar signals had been seen on ocean bottom seismometers, but if the land-based detection were to become routine, perhaps with improved seismic sensors, more complete records of ocean dynamics would become available.

Citation: Shaddox, H., Brodsky, E., Davis, K. & Ramp, S. [2021]. Seismic Detection of Oceanic Internal Gravity Waves from Subaerial Seismometers. AGU Advances, 2, e2021AV000475.

—Thorsten W. Becker, Editor, AGU Advances

Text © 2021. The authors. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.