ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＥＭｓｃａｔｅｒｉｎｇｆｒｏｍｔｈｅｒｏｕｇｈｓｕｒｆａｃｅｉｓｖｅｒｙｕｓｅｆｕｌｉｎｓｃｉｅｎｃｅａｎｄｅｎｇｉｎｅｅｒｉｎｇａｐｐｌｉｃａｔｉｏｎｓ．Ｆｏｒｅｘａｍｐｌｅ，ｔｈｅｇｒｏｕｎｄｏｒｓｅａｓｕｒｆａｃｅ.........

We study a simplified(3+1)-dimensional model equation and construct a lump solution for the special case of z=y using th......