リソース アクティビティストリーム アクティビティ型 All activity types New Package Changed Package Deleted Package Follow Dataset New Resource View Changed Resource View Deleted Resource View admin created the データセット Significant Midlatitude Bubble-Like Ionospheric Super-Depletion Structure (BLISS) and dynamic variation of storm-enhanced density plume during the 23 April 2023 geomagnetic storm 2 週間前