搜索结果: 46-60 共查到“知识库 海洋地质学”相关记录778条 . 查询时间(1.072 秒)
Determining the basic processes governing the biogeochemical structure of the water column is a key challenge for today's oceanographers. Knowledge of these basic processes for an aquatic system makes...
Paradigm Lost,Paradigm Found:The Black Sea-Black Shale Connection as Viewed from the Anoxic Basin Margin
Paradigm Lost Paradigm Found Black Sea-Black Shale Connection Anoxic Basin Margin
2015/7/27
Uppermost Holocene (Unit 1) microlaminated sediments of the deep central Black Sea, which accumulate at ca. 0.02 cm/y, are a classic natural laboratory for exploring geochemical proxies used to identi...
On Inauguration Day 2005, the TOS Council, the governing board of The Oceanography Society, held its Annual Meeting by teleconference. Council members dialed in from five different time zones. This wa...
I love teaching the first course in oceanography for non-majors—indeed, that is my professional specialty. Some readers of this column may look upon an assignment to teach a freshman general oceanogra...
Mass Balance of the Cryosphere: Observations and Modelling of Contemporary and Future Changes
Observations Contemporary
2015/7/27
he recent monograph edited by Jonathan Bamber and Tony Payne is an excellent resource for those researchers wishing to learn about the status of the modern cryosphere and its influence on global clima...
New Insights into the Hydrogeology of the Oceanic Crust through Long-Term Monitoring
Hydrogeology Oceanic Crust Long-Term Monitoring
2015/7/24
The hydrogeology of the oceanic crust influences numerous global processes and properties, including the thermal evolution of oceanic lithosphere, crustal alteration and the chemistry of crustal fluid...
Time is of the Essence
Time the Essence
2015/7/24
From the age of the Earth itself, to the rates at which mountains erode and species evolve, time and rates of change have been the "holy grail" of geologic knowledge. In the study of sedimentary layer...
An Ocean View of the Early Cenozoic Greenhouse World
Ocean View Early Cenozoic Greenhouse World
2015/7/24
The Deep Sea Drilling Project (DSDP; 1966–1983) and the Ocean Drilling Program (ODP; 1983–2003) have supplied an amazing amount of information used in reconstruction of past climates, and the present ...
Manufacturing Continental Crust in the Subduction Factory
Manufacturing Continental Crust Subduction Factory
2015/7/24
Subduction zones have been consuming oceanic lithosphere since the dawn of plate tectonics on this planet (Figure 1). Raw materials such as pelagic and terrigenous sediments, altered and fresh basalti...
Walker Circulation and Global Warming:Lessons from the Geologic Past
Walker Circulation Global Warming Geologic Past
2015/7/24
Short-lived El Niño events are temporary changes in tropical Pacific conditions that are responsible for dramatic perturbations to "normal" tropical climate, such as drought in Indonesia and floo...
Gas Hydrates in Marine Sediments:Lessons from Scientific Ocean Drilling
Gas Hydrates Marine Sediments Scientific Ocean Drilling
2015/7/24
Certain low-molecular-weight gases, such as methane, ethane, and carbon dioxide, can combine with water to form ice-like substances at high pressure or low temperature. These compounds, commonly calle...
The Arctic Coring Expedition (ACEX) Recovers a Cenozoic History of the Arctic Ocean
Arctic Coring Expedition (ACEX) Recovers a Cenozoic History Arctic Ocean
2015/7/24
The Arctic Ocean is a small, nearly landlocked ocean basin that is the shallowest in the world (Figure 1). It has maintained a polar location since forming in Early Cretaceous times (Grantz et al., 19...
Large Igneous Provinces and Scientific Ocean Drilling:Status Quo and A Look Ahead
Large Igneous Provinces Scientific Ocean Drilling Status Quo Look Ahead
2015/7/24
A rich mosaic of disparate crustal types characterizes the Earth beneath the sea. Although "normal" oceanic crust approximately 7-km thick is by far the most prevalent, abnormally thick oceanic-type c...
Mission-Specific Platforms for the Integrated Ocean Drilling Program
Mission-Specific Platforms Integrated Ocean Drilling Program
2015/7/24
Since the inception of the Deep Sea Drilling Project (DSDP) and during the Ocean Drilling Program (ODP), scien-tific ocean drilling has been almost wholly confined to outer-shelf water depths or great...
Past and Future Impact of Deep Drilling in the Oceanic Crust and Mantle
Past and Future Deep Drilling Oceanic Crust and Mantle
2015/7/24
Knowledge of the composition of oceanic crust is critical for calculating the fluxes of mass, heat, and volatiles from Earth's interior to its crust, oceans, and atmosphere. In the great debate over c...