2018
DOI: 10.1016/j.asr.2017.10.006
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Geoeffectiveness of interplanetary shocks controlled by impact angles: A review

Abstract: The high variability of the Sun's magnetic field is responsible for the generation of perturbations that propagate throughout the heliosphere. Such disturbances often drive interplanetary shocks in front of their leading regions. Strong shocks transfer momentum and energy into the solar wind ahead of them which in turn enhance the solar wind interaction with magnetic fields in its way. Shocks then eventually strike the Earth's magnetosphere and trigger a myriad of geomagnetic effects observed not only by space… Show more

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Cited by 52 publications
(92 citation statements)
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“…The shock parameters were calculated by solving the Rankine-Hugoniot conditions, which are based on the conservation of energy and momentum across the shock surface (Burlaga, 1971;Landau & Lifshitz, 1960). The methods and techniques used to compute those and other shock properties are outlined in detail by previous works (Oliveira, 2017;Oliveira & Raeder, 2015;Oliveira & Samsonov, 2018;Oliveira et al, 2016). A list with 547 IP shocks can be found in the supporting information.…”
Section: Ip Shock Databasementioning
confidence: 99%
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“…The shock parameters were calculated by solving the Rankine-Hugoniot conditions, which are based on the conservation of energy and momentum across the shock surface (Burlaga, 1971;Landau & Lifshitz, 1960). The methods and techniques used to compute those and other shock properties are outlined in detail by previous works (Oliveira, 2017;Oliveira & Raeder, 2015;Oliveira & Samsonov, 2018;Oliveira et al, 2016). A list with 547 IP shocks can be found in the supporting information.…”
Section: Ip Shock Databasementioning
confidence: 99%
“…Later, similar results were obtained by Oliveira et al () for enhancements of the nightside auroral power intensity following shock impacts on the magnetosphere. A comprehensive review of this subject has recently been provided by Oliveira and Samsonov ().…”
Section: Introductionmentioning
confidence: 99%
“…We first use a case study comparison to explore the effects of shock impact angles on ground magnetometer response and whether the hemisphere that the IP shock strikes first has the first and/or the most intense ground magnetic response. We selected events meeting the following criteria: (i) occur at similar UTs to reduce complicating factors such as spatially varying current systems, and (ii) similar shock speeds and magnetosonic Mach numbers ( Ms) because shock strength is an important parameter controlling ground response that would bias this analysis (Oliveira & Samsonov, ). The parameters for the shock events we selected are shown in Table .…”
Section: Resultsmentioning
confidence: 99%
“…Usually, strengths of IP shocks are expressed by shock speeds and magnetosonic Mach numbers, defined as the ratio between the shock/medium relative velocity to the local magnetosonic speed (Burlaga, ; Oliveira, ; Richter et al, ). One of the first prompt effects of IP shock impacts on the magnetosphere are sharp jumps in the horizontal magnetic field perturbations known as positive sudden impulses, or SI +, that can be measured anywhere on the planet (Araki, ; Oliveira & Samsonov, ; Rudd et al, ; Smith et al, ; Wang et al, ).…”
Section: Introductionmentioning
confidence: 99%
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