The home side, runners-up behind Warwickshire last season, were bowled out for 67 in their second innings, Tim Munton taking 4 for 14 and Dermot Reeve adding two wickets to his four from the first innings.
It was the champions' third win in a row, and they now look a strong bet to retain at least one of their three titles. Starting the second day at 102 for 3, they were hoisted up to 307 thanks largely to a ninth- wicket stand of 92 between Neil Smith (67 not out off 51 balls) and Allan Donald.
Chris Cairns, Nottinghamshire's New Zealand all-rounder, returned match figures of 15 for 83 at Arundel as Sussex, conquerors of the West Indies, succumbed to the second two-day defeat of this round of Championship matches.
Yesterday Cairns took 7 for 36 in Sussex's second-innings total of 149, which left the visitors needing 29 for victory after their first-innings had ended at 255. Neil Lenham was unable to bat second time around for Sussex owing to a broken left index finger.
Keith Parsons and Graham Rose almost pulled off a thrilling victory for Somerset over Young Australia at Taunton. Parsons struck his maiden first- class century and Rose a rapid 71 as the home side fell 30 runs short of a daunting 461 victory target. Mark Lathwell had earlier added 84 to his first-innings 89.Reuse content