SPP 1144: From Mantle to Ocean: Energy, Material and Life Cycles on Spreading Axes

SPP 1144：从地幔到海洋：传播轴上的能量、材料和生命周期

• 批准号: 5471797
• 金额: --
• 依托单位: GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5471797?language=en
• 关键词: SPP; 1144; Mantle; Ocean; Energy

The aim of the Priority Programme is to carry out a multi-disciplinary, multi-segment scale study of the mid-ocean spreading system in the Atlantic. For this work two areas (15°N and 4-11°S) have been selected. The programme has two particulary highly innovative features:-- the integrated study of pre-defined areas of groups covering the highly disparate fields of petrology, volcanology, geodynamics, geophysics, hydrothermalism, microbiology, macrobiology, oceanography, water chemistry and convection modelling;-- the use of a state-of-the-art remotely-operated vehicle (ROV) for precise well-located sampling and observation of the seafloor.A detailed surface sampling will provide indications of regional variations in eruption processes, magma sources and hydrothermal deposits as well as the spatial distribution of faunal assemblages. Short drill cores will extend our knowledge into the subsurface. Geophysical investigations should give insights into the entire crust and deeper parts of the mantle.Using investigations in the same areas over several years we will get information about temporal variations in the different processes at spreading axes (e.g. eruptions, tections, hydrothermal and biological activities), information which will extend our present-day three-dimensional view of the ridges to include a time-axis.All investigations are of great relevance for the international ridge community. The InterRidge-initiative, which was established in 1992, is an important tool for the successful coordination of studies related to spreading axes. InterRidge promotes interdisciplinary, international studies at oceanic spreading axes through the exchange of information.

优先方案的目的是对大西洋洋中扩张系统进行多学科、多部门规模的研究。为这项工作选择了两个地区（15°N和4-11°S）。该方案有两个特别的高度创新的特点：-对岩石学、火山学、地球动力学、地球物理学、热液学、微生物学、宏观生物学、海洋学、水化学和对流建模等高度不同领域的小组的预定领域进行综合研究;- 使用最先进的遥控潜水器对海底进行精确的定点取样和观察，详细的表面取样将提供喷发过程中区域变化的迹象，岩浆来源和热液矿床以及动物群组合的空间分布。短岩心将使我们的知识扩展到地下。地球物理学调查应能使我们了解整个地壳和地幔的更深部分。通过对同一地区几年的调查，我们将获得关于扩展轴上不同过程的时间变化的信息（例如喷发、保护、热液和生物活动），这些资料将扩大我们目前对海脊的三维看法，使之包括一个时间轴。所有调查对国际海脊界都具有重大意义。1992年制定的国际大洋中脊倡议是成功协调与扩展轴有关的研究的重要工具。国际大洋中脊协会通过交流信息，促进对大洋扩张轴的跨学科国际研究。