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Ionospheric Density Irregularities at Equatorial Plasma Depletion: Synthetic Aperture Radar Satellite Observation

Sato, Hiroatsu and Kim, Junsu and Otsuka, Yuichi and Wrass, Cristiano Max and de Paula, Eurico Rodrigues and de Souza, Jonas Rodrigues (2021) Ionospheric Density Irregularities at Equatorial Plasma Depletion: Synthetic Aperture Radar Satellite Observation. AGU Fall Meeting, 2021-12-13 - 2021-12-17, New Orleans, USA.

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Abstract

We present observation of plasma density irregularities in the equatorial ionosphere by using Synthetic Aperture Radar (SAR) satellite and ground all sky imager. In the vicinity of observed 630-nm airglow depletion in northern Brazil, the ALOS-2/PALSAR-2 satellite image shows stripe-like distortions of SAR signal power that are aligned in the direction of local magnetic field lines. We show that these phenomena called SAR scintillation stripes, which were first reported a decade ago, are caused by plasma irregularities with the scale size of hundreds of meters associated with equatorial plasma bubbles. The spatial distribution of extracted scintillation stripes and SAR-derived density gradients are analyzed. This study suggests SAR satellite data can be used to image equatorial plasma irregularities with high spatial resolution

Item URL in elib:https://elib.dlr.de/148213/
Document Type:Conference or Workshop Item (Speech)
Title:Ionospheric Density Irregularities at Equatorial Plasma Depletion: Synthetic Aperture Radar Satellite Observation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Sato, HiroatsuUNSPECIFIEDhttps://orcid.org/0000-0002-5886-2768UNSPECIFIED
Kim, JunsuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otsuka, YuichiUNSPECIFIEDhttps://orcid.org/0000-0002-3098-3859UNSPECIFIED
Wrass, Cristiano MaxINPEhttps://orcid.org/0000-0001-8026-3625UNSPECIFIED
de Paula, Eurico RodriguesINPEUNSPECIFIEDUNSPECIFIED
de Souza, Jonas RodriguesINPEUNSPECIFIEDUNSPECIFIED
Date:December 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ionosphere, plasma bubble, SAR, airglow
Event Title:AGU Fall Meeting
Event Location:New Orleans, USA
Event Type:international Conference
Event Start Date:13 December 2021
Event End Date:17 December 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics
Microwaves and Radar Institute
Deposited By: Sato, Hiroatsu
Deposited On:17 Jan 2022 09:03
Last Modified:24 Apr 2024 20:46

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