ocr: COSTEP SOHOTET 13Em 1400L1 14:1310 142210 14511 it0 Elecirons - 4o E<ONol a . d E - 0.0L HANNT 1L 01 Pralans MV CH<TONy 0OBL - n - h Veu SOHOICOSTEP lmos 13 4 15 6 17 18 19 20 21 22 23 Lu April , 10 SOHO/EII/COSTEP EUV electron and proton observations for the onset phase of the particle/CME event on April 7, 1997. The ENT running difference images taken af 195Ashow a shock (Moreton-like) wave in the south-eastern portion of the lower corona which was running across the solar disk at speeds of several hundred km/s. The fimes of the individual EIT images are marked in the intensify-time profiles ...