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

合作研究：第二代埋地宽带海底地震仪和埋藏系统的设计与建造

• 批准号: 0096451
• 负责人: John Collins
• 金额: --
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2007-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096451&HistoricalAwards=false
• 关键词: Collaborative; Research; Design; Construction; Second

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.

这一海洋科学技术合作开发项目是在陆地上临时部署便携式宽带地震仪所取得的成功的基础上开展的。 已经提出了为海洋提供同等能力的科学论点。目前可用的便携式宽带海底地震仪（BBOBS）和埋藏系统是原型，必须加以改进，才能使这些地震仪在海洋中的使用成为常规。该项目将开发一种埋地系统和可埋式地震计的组合，每天可部署2-3个BBOBS。 该埋藏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。 新的埋设系统将利用重力来埋设地震计，由于新的BBOBS使用的钻孔地震计的直径比传统型号小得多，埋设新地震计所需的力将大大减少，加强海洋地震覆盖范围对于提高地震分辨率至关重要，以便更好地解决与固体地球动力学有关的现有问题和新问题。 地球物理界将受益于海底地震仪，这些地震仪的测量能力与陆基台站相当，可以以最低成本迅速部署和恢复。 该项目将建造和测试一个埋葬系统和一个BBOBS。如果新的可埋地震仪和埋置系统达到设计目标，将寻求资金，用可埋宽带地震仪升级多达30个现有仪器。