jgg     2014 34 (3):  99-103    ISSN: 0412-1961  CN: 21-1139/TG RECENT HORIZONTANL VELOCITY FIELD OF NORTHEASTERN  TIBETAN PLATEAU Second Crustal Monitoring and Application Centre,Xi’an 710054 Received: 2013-10-16  Revised: null  Online: 2014-05-28 Supporting info