Collaborative Research: Design and Construction of a Second-Generation Buriable Broadband Ocean Bottom Seismograph and Burial System

这个海洋科学技术合作开发项目建立在临时部署便携式宽带地震仪在陆地上取得的成功的基础上。一项科学论证已经提出，为海洋提供同等的能力。目前可用的便携式宽带海底地震仪（BBOBS）和埋藏系统都是原型，必须在这些地震仪在海洋中成为常规使用之前进行改进。该项目将开发埋藏系统和埋藏地震仪的组合，每天可部署2-3个bbob。掩埋系统将成为美国国家海底地震仪器池（OBSIP）的一部分，并将提供给研究界。新的埋地系统将利用重力进行地震仪的埋地，由于新的BBOBS使用的井眼地震仪直径比传统模型小得多，埋地所需的力将大大减少。增强海洋地震覆盖范围对于提高地震分辨率以更好地解决与固体地球动力学有关的现有问题和新问题至关重要。地球物理学界将受益于海底地震仪，其测量能力可与陆基台站相媲美，可以快速部署和恢复，成本最低。本项目将建设和测试一个埋地系统和一个bbob。如果新的可埋式地震仪和埋藏系统达到设计目标，将寻求资金升级多达30个现有的可埋式宽带地震仪仪器。

This collaborative ocean science technology development project builds upon successes achieved on land with temporary deployments of portable broadband seismographs. A scientific argument has been made to provide an equivalent capability for the oceans. Currently available portable broadband ocean bottom seismographs (BBOBS) and burial systems are prototypes and must be improved before the use of these seismographs in the oceans becomes routine. This project will develop a combination of burial system and buriable seismometer that will enable 2-3 BBOBS deployments per day. The burial system will become part of the U.S. National Ocean Bottom Seismic Instrumentation Pool (OBSIP) and will be available to the research community. The new burial system will use the force of gravity for seismometer burial, and because the new BBOBS uses a borehole seismometer that has a substantially smaller diameter than conventional models, the force required to bury the new seismometer will substantially less. Enhanced seismic coverage over the oceans is vital to improving seismic resolution to better address existing as well as new questions pertaining to solid Earth dynamics. The geophysical community will benefit from ocean bottom seismometers with measurement capabilities comparable to land-based stations that can be deployed and recovered quickly and at minimal cost. This project will construct and test one burial system and one BBOBS. Should the new buriable seismometer and burial system meet design goals, funding will be sought to upgrade up to 30 existing instruments with buriable broadband seismometers.