Paul Johnson眯眼看着显示器上显现的鲜活图象，这图象来自北太平洋的白色洋面之下接近3000米处的荒凉洋底。显示器就是与潜水机器人Jason的独眼相连通的观察孔。Jason现在正悬浮在从考察船Thomas G．Thompson上垂下的供电和光纤系索的...Paul Johnson眯眼看着显示器上显现的鲜活图象，这图象来自北太平洋的白色洋面之下接近3000米处的荒凉洋底。显示器就是与潜水机器人Jason的独眼相连通的观察孔。Jason现在正悬浮在从考察船Thomas G．Thompson上垂下的供电和光纤系索的末端。展开更多
By using an offshore large volume air-gun seismic source, onshore seismic stations( including mobile stations and permanent stations) and ocean bottom seismometers,a deep seismic exploration experiment was carried out...By using an offshore large volume air-gun seismic source, onshore seismic stations( including mobile stations and permanent stations) and ocean bottom seismometers,a deep seismic exploration experiment was carried out for the first time in the Taiwan Straits. Results show that seismic stations can receive seismic signals from the air-gun arrays of the "YANPING Ⅱ"scientific investigation ship from as far as 280 km away.Tens of thousands of high quality seismic data items were obtained successfully and different types of P-wave seismic phases were identified. A one-dimensional crustal structure model of the survey profile HX9 shows that the crustal structure,which is reflected by Pc and Pm P reflection waves from two velocity discontinuities and basement refraction wave( Pg) constitutes the basic characteristic of the crustal structure in this region. The depths of Conrad discontinuity and Moho discontinuity are respectively16. 0km- 17. 5km and 28. 0km- 29. 5km.展开更多
基金funded by Youth Science and Technology Fund of Earthquake Administration of Fujian Province,China(Y201407)
文摘By using an offshore large volume air-gun seismic source, onshore seismic stations( including mobile stations and permanent stations) and ocean bottom seismometers,a deep seismic exploration experiment was carried out for the first time in the Taiwan Straits. Results show that seismic stations can receive seismic signals from the air-gun arrays of the "YANPING Ⅱ"scientific investigation ship from as far as 280 km away.Tens of thousands of high quality seismic data items were obtained successfully and different types of P-wave seismic phases were identified. A one-dimensional crustal structure model of the survey profile HX9 shows that the crustal structure,which is reflected by Pc and Pm P reflection waves from two velocity discontinuities and basement refraction wave( Pg) constitutes the basic characteristic of the crustal structure in this region. The depths of Conrad discontinuity and Moho discontinuity are respectively16. 0km- 17. 5km and 28. 0km- 29. 5km.
