Sökning: id:"swepub:oai:DiVA.org:ltu-74886" >
Earth atmospheric l...
Earth atmospheric loss through the plasma mantle and its dependence on solar wind parameters
-
- Schillings, Audrey (författare)
- Luleå tekniska universitet,Rymdteknik,Swedish Institute of Space Physics, Kiruna
-
- Slapak, Rikard (författare)
- EISCAT Scientifc Association, Kiruna
-
- Nilsson, Hans (författare)
- Luleå tekniska universitet,Rymdteknik,Swedish Institute of Space Physics, Kiruna
-
visa fler...
-
- Yamauchi, Masatoshi (författare)
- Swedish Institute of Space Physics, Kiruna
-
- Dandouras, Iannis (författare)
- IRAP, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France
-
- Westerberg, Lars-Göran (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
-
visa färre...
-
(creator_code:org_t)
- 2019-06-21
- 2019
- Engelska.
-
Ingår i: Earth Planets and Space. - : Springer. - 1343-8832 .- 1880-5981. ; 71:70
- Relaterad länk:
-
https://earth-planet...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Atmospheric loss and ion outfow play an important role in the magnetospheric dynamics and in the evolution of the atmosphere on geological timescales—an evolution which is also dependent on the solar activity. In this paper, we investigate the total O+ outfow [s−1 ] through the plasma mantle and its dependency on several solar wind param‑ eters. The oxygen ion data come from the CODIF instrument on board the spacecraft Cluster 4 and solar wind data from the OMNIWeb database for a period of 5 years (2001–2005). We study the distribution of the dynamic pressure and the interplanetary magnetic feld for time periods with available O+ observations in the plasma mantle. We then divided the data into suitably sized intervals. Additionally, we analyse the extreme ultraviolet radiation (EUV) data from the TIMED mission. We estimate the O+ escape rate [ions/s] as a function of the solar wind dynamic pressure, the interplanetary magnetic feld (IMF) and EUV. Our analysis shows that the O+ escape rate in the plasma mantle increases with increased solar wind dynamic pressure. Consistently, it was found that the southward IMF also plays an important role in the O+ escape rate in contrast to the EUV fux which does not have a signifcant infuence for the plasma mantle region. Finally, the relation between the O+ escape rate and the solar wind energy transferred into the magnetosphere shows a nonlinear response. The O+ escape rate starts increasing with an energy input of approxi‑ mately 1011W.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- O+ outfow/escape
- Plasma mantle
- Solar wind
- Interplanetary magnetic feld (IMF)
- Extreme ultraviolet (EUV)
- Coupling functions
- Atmosfärsvetenskap
- Atmospheric science
- Strömningslära
- Fluid Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas