2017年4月20日，一座巨型冰山搁浅于纽芬兰岛东南部小镇费里兰．小镇突然成了拥挤的旅游景点。下图左为“搁浅冰山照片”，右为“北大西洋中高纬度洋面年平均水温图”。回答下列问题。
(1)每年春季纽芬兰岛附近会出现大量冰山，这些冰山源自__________，其对附近海水性质可能产生的影响有__________。
(2)冰山分布范围与大洋表层水温状况有关。北大西洋中高纬地区水温分布特点是__________，主要影响因素有__________。
(3)此外，冰山出现的时间、数量还受气温变化影响。随着全球气候转暖．北大西洋中冰山出现的变化趋势有__________。
正确答案及解析
正确答案
解析
(1)极地地区(格陵兰岛冰川；北冰洋冰川) 水温降低：盐度降低
(2)同纬度西低东高；随纬度增加水温降低；西部温差大，东部温差小。
洋流(西部寒流，东部暖流)；纬度
(3)时间提前：数量增多
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