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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG Location: Earth Event Time: 2024-11-07T14:29Z ( ACE: MAG ) Quality of ICME Signature: 0 (weak signatures) Note: Per analysis by Carlos Perez Alanis, LASSOS team: The signature on 2024-11-07 through 11-09 could be indicative of two merged ICMEs. The relatively weak shock/sheath signature starting at 2024-11-07T14:29Z is characterized by a minor enhancement in the magnetic field (with B_total reaching only 8nT). The shock is however clearly visible in the plasma measurements (a jump in solar wind speed from 380 to 425 km/s and in density from 6 to over 13 p/cc). Following this the solar wind is a bit disturbed, possibly it is the sheath which may have lasted quite long due to the mixed ICMEs. There are two consecutive flux rope signatures in the following signature. The likely arrival of the first flux rope is after 2024-11-08T10:25Z. This first flux rope signature is characterized by an increase in B_total to over 16nT, smooth rotation of all three magnetic field components, as well as by a drop in density and temperature. The second flux rope signature starts around 2024-11-08T23:30Z and is characterized by B_total reaching 16nT, a long period of negative Bz and another drop in density and temperature. Submitted on 2024-11-12T17:19Z by Anna Chulaki A Notification with ID 20241108-AL-001 was sent on 2024-11-08T13:13Z |
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