Processed multichannel seismic data in the western Woodlark Basin, acquired during the R/V Maurice Ewing survey EW9910 (1999)

This 1999 Ewing cruise offshore Papua New Guinea, collecting MCS and OBS/OBH data, involved researchers from the University of Hawaii (UH), Lamont-Doherty Earth Observatory (LDEO), and the University of California, Santa Cruz (UCSC). The first part of the cruise was an ODP site survey to characterize in detail the low-angle fault at the rift-to-spreading transition in the Woodlark Basin. UH worked on the MCS and LDEO on the OBS/OBH data. UCSC processed the data from the second part of the cruise which focused on the source region of a 1998 tsunami along the northern continental margin of Papua New Guinea. The purpose of the early part of the cruise was to study the seismicity of an active continental breakup in the western Woodlark Basin. The goal of the second part was to study the internal structure of the tsunami source region. Funded by NSF grants OCE 9730864, OCE 9730824, OCE 9730567, and OCE 9725792.

1999年，Ewing号远洋考察船在巴布亚新几内亚海域进行航行，收集了多尺度地震学（MCS）和海洋底部观测（OBS/OBH）数据。此次航行的研究团队由夏威夷大学（UH）、拉蒙特-多赫蒂地球观测站（LDEO）以及加州大学圣克鲁兹分校（UCSC）的学者组成。航行首段任务是对奥多拉多计划（ODP）研究地点进行详尽的地质调查，以描绘伍德拉克盆地裂谷至扩张过渡区域的低角度断层特征。夏威夷大学负责分析MCS数据，而拉蒙特-多赫蒂地球观测站则专注于处理OBS/OBH数据。加州大学圣克鲁兹分校负责处理航行第二阶段的数据，该阶段的研究重点在于1998年沿巴布亚新几内亚北部大陆边缘海啸的源区。航行初期旨在研究西部伍德拉克盆地活跃的大陆分裂地震学特征，而后期目标则是探究海啸源区的内部结构。该项目得到美国国家科学基金会（NSF）资助，具体资助编号为OCE 9730864、OCE 9730824、OCE 9730567和OCE 9725792。