|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
20 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Deep sea floor observations of typhoon driven enhanced ocean turbulence | | Hans van Haren
; Wu-Cheng Chi
; Chu-Fang Yang
; Yiing-Jang Yang
; Sen Jan
; | | Date: |
10 Oct 2019 | | Abstract: | The impact of large atmospheric disturbances on deep benthic communities is
not well known quantitatively. Observations are scarce but may reveal specific
processes leading to turbulent disturbances. Here, we present high-resolution
deep-ocean observations to study potential turbulent mixing by large
atmospheric disturbances. We deployed an array of 100-Hz sampling-rate
geophysical broadband Ocean Bottom Seismometers (OBSs) on the seafloor. Within
the footprint of this array we also deployed an oceanographic 1-Hz
sampling-rate vertical temperature sensor string covering the water phase
between 7 and 207 m above the seafloor at about 3000 m depth off eastern Taiwan
between June 2017 and April 2018. All instruments registered Category 4 cyclone
Typhoon Talims passage northeast of the array one day ahead of the cyclones
closest approach when the cyclones eye was more than 1,000 km away. For 10
days, a group of near-inertial motions appeared most clearly in temperature.
The registration reflects the importance of barotropic response to cyclones and
the propagation of inertio-gravity waves in weak density stratification. In
addition to internal tides, these waves drove turbulent overturns larger than
200 m that were concurrently registered by OBSs. The turbulent signals were
neither due to seismic activity nor to ocean-surface wave action. Cyclones can
generate not only microseisms and earth hums, as well as turbulence in the
water column, producing additional ground motions. Quantified turbulence
processes may help constrain models on sediment resuspension and its effect on
deep-sea benthic life. | | Source: | arXiv, 1910.4470 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER