@Article{KlausnerdeOliveiraPapCânDomMen:2016:CaStUs,
author = "Klausner de Oliveira, Virginia and Papa, Andr{\'e}s Reinaldo
Rodriguez and C{\^a}ndido, Cl{\'a}udia Maria Nicoli and
Domingues, Margarete Oliveira and Mendes, Odim",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Observat{\'o}rio Nacional (ON)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "An alternative way to identify local geomagnetically quiet days: a
case study using wavelet analysis",
journal = "Annales Geophysicae",
year = "2016",
volume = "34",
number = "4",
pages = "451--462",
month = "Apr.",
keywords = "Geomagnetism and paleomagnetism (instruments and techniques,
general or miscellaneous), Magnetospheric physics (solar
wind-magnetosphere interactions).",
abstract = "This paper proposes a new method to evaluate geomagnetic activity
based on wavelet analysis during the solar minimum activity
(2007). In order to accomplish this task, a newly developed
algorithm called effectiveness wavelet coefficient (EWC) was
applied. Furthermore, a comparison between the 5 geomagnetically
quiet days determined by the Kp-based method and by wavelet-based
method was performed. This paper provides a new insight since the
geomagnetic activity indexes are mostly designed to quantify the
extent of disturbance rather than the quietness. The results
suggest that the EWC can be used as an alternative tool to
accurately detect quiet days, and consequently, it can also be
used as an alternative to determine the Sq baseline to the current
Kp-based 5 quietest days method. Another important aspect of this
paper is that most of the quietest local wavelet candidate days
occurred in an interval 2 days prior to the
high-speed-stream-driven storm events. In other words, the EWC
algorithm may potentially be used to detect the quietest magnetic
activity that tends to occur just before the arrival of
high-speed-stream-driven storms.",
doi = "10.5194/angeo-34-451-2016",
url = "http://dx.doi.org/10.5194/angeo-34-451-2016",
issn = "0992-7689",
language = "en",
targetfile = "klausner_alternative.pdf",
urlaccessdate = "27 abr. 2024"
}