Internal wave crystals
Geophysical fluids such as the ocean and atmosphere can be stratified: their density depends on the depth. As a consequence, they can host internal gravity waves that propagate in the bulk of the fluid, far from the surface. These waves can transport energy and momentum over large distances, thereby...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
arXiv
2021
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.2111.07984 https://arxiv.org/abs/2111.07984 |
id |
ftdatacite:10.48550/arxiv.2111.07984 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48550/arxiv.2111.07984 2023-05-15T15:07:03+02:00 Internal wave crystals Ghaemsaidi, Sasan J. Fruchart, Michel Atis, Severine 2021 https://dx.doi.org/10.48550/arxiv.2111.07984 https://arxiv.org/abs/2111.07984 unknown arXiv Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Atmospheric and Oceanic Physics physics.ao-ph Other Condensed Matter cond-mat.other Soft Condensed Matter cond-mat.soft FOS Physical sciences Article CreativeWork article Preprint 2021 ftdatacite https://doi.org/10.48550/arxiv.2111.07984 2022-03-10T13:30:37Z Geophysical fluids such as the ocean and atmosphere can be stratified: their density depends on the depth. As a consequence, they can host internal gravity waves that propagate in the bulk of the fluid, far from the surface. These waves can transport energy and momentum over large distances, thereby affecting large-scale circulation patterns, as well as the transport of heat, sediments, nutrients and pollutants in the ocean. When the density stratification is not uniform, internal waves can exhibit wave phenomena such as resonances, tunneling, and frequency-dependent transmissions. Spatially periodic density profiles formed by thermohaline staircases are commonly found in stratified fluids ranging from the Arctic Ocean to giant planet interiors, and can produce extended regions with periodically stratified fluid. Here, we report on the experimental observation of band gaps for internal gravity waves, ranges of frequencies over which the wave propagation is prohibited in the presence of a periodic stratification. We show the existence of surface states controlled by boundary conditions and discuss their topological origin. Our results suggest that energy transport can be profoundly affected by the presence of periodic stratifications in geophysical fluids ranging from Earth's oceans to gas giants. Article in Journal/Newspaper Arctic Arctic Ocean DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Atmospheric and Oceanic Physics physics.ao-ph Other Condensed Matter cond-mat.other Soft Condensed Matter cond-mat.soft FOS Physical sciences |
spellingShingle |
Atmospheric and Oceanic Physics physics.ao-ph Other Condensed Matter cond-mat.other Soft Condensed Matter cond-mat.soft FOS Physical sciences Ghaemsaidi, Sasan J. Fruchart, Michel Atis, Severine Internal wave crystals |
topic_facet |
Atmospheric and Oceanic Physics physics.ao-ph Other Condensed Matter cond-mat.other Soft Condensed Matter cond-mat.soft FOS Physical sciences |
description |
Geophysical fluids such as the ocean and atmosphere can be stratified: their density depends on the depth. As a consequence, they can host internal gravity waves that propagate in the bulk of the fluid, far from the surface. These waves can transport energy and momentum over large distances, thereby affecting large-scale circulation patterns, as well as the transport of heat, sediments, nutrients and pollutants in the ocean. When the density stratification is not uniform, internal waves can exhibit wave phenomena such as resonances, tunneling, and frequency-dependent transmissions. Spatially periodic density profiles formed by thermohaline staircases are commonly found in stratified fluids ranging from the Arctic Ocean to giant planet interiors, and can produce extended regions with periodically stratified fluid. Here, we report on the experimental observation of band gaps for internal gravity waves, ranges of frequencies over which the wave propagation is prohibited in the presence of a periodic stratification. We show the existence of surface states controlled by boundary conditions and discuss their topological origin. Our results suggest that energy transport can be profoundly affected by the presence of periodic stratifications in geophysical fluids ranging from Earth's oceans to gas giants. |
format |
Article in Journal/Newspaper |
author |
Ghaemsaidi, Sasan J. Fruchart, Michel Atis, Severine |
author_facet |
Ghaemsaidi, Sasan J. Fruchart, Michel Atis, Severine |
author_sort |
Ghaemsaidi, Sasan J. |
title |
Internal wave crystals |
title_short |
Internal wave crystals |
title_full |
Internal wave crystals |
title_fullStr |
Internal wave crystals |
title_full_unstemmed |
Internal wave crystals |
title_sort |
internal wave crystals |
publisher |
arXiv |
publishDate |
2021 |
url |
https://dx.doi.org/10.48550/arxiv.2111.07984 https://arxiv.org/abs/2111.07984 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.48550/arxiv.2111.07984 |
_version_ |
1766338618943602688 |