Sensitivity of M2 tidal magnetic signals to seasonal and spatial variations of ocean electric conductivity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10489575" target="_blank" >RIV/00216208:11320/24:10489575 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QT5k_bnZBK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QT5k_bnZBK</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rsta.2024.0079" target="_blank" >10.1098/rsta.2024.0079</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity of M2 tidal magnetic signals to seasonal and spatial variations of ocean electric conductivity

Popis výsledku v původním jazyce

Electrical conductivity of the Earth&apos;s oceans is an important oceanographic parameter related through its dependence on temperature and salinity to the state of the ocean. The tidally induced magnetic field then provides a directly and globally observable physical variable affected by the ocean conductivity spatial and temporal distribution. This contribution addresses two topics of the impact of the ocean conductivity variations on the principal lunar semi-diurnal magnetic signals. First, using high-resolution forward modelling, we investigate the sensitivity of the magnetic field to seasonal conductivity variations. Here, we find that the differences between magnetic signatures calculated for individual monthly conductivity climatologies are small, and localized to the marginal seas of the global ocean. Second, we formulate an inverse method to provide a constraint for the ocean conductivity in the upper 1000 m of the ocean, and test it using a synthetic dataset, demonstrating a proof-of-concept for such an approach.This article is part of the theme issue &apos;Magnetometric remote sensing of Earth and planetary oceans&apos;.

Název v anglickém jazyce

Sensitivity of M2 tidal magnetic signals to seasonal and spatial variations of ocean electric conductivity

Popis výsledku anglicky

Electrical conductivity of the Earth&apos;s oceans is an important oceanographic parameter related through its dependence on temperature and salinity to the state of the ocean. The tidally induced magnetic field then provides a directly and globally observable physical variable affected by the ocean conductivity spatial and temporal distribution. This contribution addresses two topics of the impact of the ocean conductivity variations on the principal lunar semi-diurnal magnetic signals. First, using high-resolution forward modelling, we investigate the sensitivity of the magnetic field to seasonal conductivity variations. Here, we find that the differences between magnetic signatures calculated for individual monthly conductivity climatologies are small, and localized to the marginal seas of the global ocean. Second, we formulate an inverse method to provide a constraint for the ocean conductivity in the upper 1000 m of the ocean, and test it using a synthetic dataset, demonstrating a proof-of-concept for such an approach.This article is part of the theme issue &apos;Magnetometric remote sensing of Earth and planetary oceans&apos;.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

ISSN

1364-503X

e-ISSN

1471-2962

Svazek periodika

382

Číslo periodika v rámci svazku

2286

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

20240079

Kód UT WoS článku

001369289800002

EID výsledku v databázi Scopus

2-s2.0-85211110961