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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG Location: Earth Event Time: 2025-05-16T20:10Z ( ACE: MAG ) Quality of ICME Signature: 1 (lacks some signatures) Note: Complex arrival signature characterized by a gradual increase in B total from 7 nT to eventually 22 nT, accompanied by rotation of two or more magnetic field components (with periods of negative Bz) and by a gradual increase of solar wind speeds from just over 400 km/s to initially 550 and eventually to over 700 km/s. Around 2025-05-17T04:10Z there is a short pileup followed by a decrease in ion density and a very fast rotation of magnetic field components; after this, the components are seen fluctuating wildly. The temperature is seen increasing throughout this whole signature. The signature is reminiscent of a high speed stream preceded by a CIR and mixed with the CME arrival/glancing blow. Version 1 submitted on 2025-05-17T12:25Z by Anna Chulaki Version 2 submitted on 2025-05-17T16:55Z by Anna Chulaki Version 3 submitted on 2025-05-17T17:10Z by Anna Chulaki Version 4 submitted on 2025-05-17T17:57Z by Anna Chulaki Version 5 submitted on 2025-05-20T13:06Z by Mattie AnastopulosNo Notification has been sent for this activity yet. |
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