據JR東日本公司稱，1月23日上午9點58分左右（日本標準時間），東北新幹線、北陸新幹線和上越新幹線發生停電。
經工作人員檢查，確認上野站和大宮站之間的上行軌道上的架空電線垂了下來。
此次事件導致：
- 東北新幹線東京站至仙台站之間的雙向列車服務已暫停。
- 北陸新幹線東京車站至長野站之間的路段雙向均延誤。
- 上越新幹線東京站至新潟站之間的所有上下行列車服務暫時停駛。
JR東日本已派出維修人員前往電線故障現場，進一步評估狀況。
然而，由於評估和修復工作預計都需要時間，因此恢復服務預計需要相當長的時間。
我們將持續關注事態發展，並在獲得更多資訊後及時更新情況。
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