- published: 27 Apr 2015
- views: 4607
Calcareous oozes; carbonate saturation, lysocline, and CCD; siliceous oozes, chert, and diatomite; abyssal red clay
Senior technician and laboratory manager Mike Hall describes work pioneered with Nick Shackleton on the use of mass spectrometers to determine climate change from deep sea sediment cores, containing shells of foraminifera. For more audio and video interview extracts from Mike Hall, visit the Voices of Science website: www.bl.uk/voices-of-science/interviewees/mike-hall.
For more like this subscribe to the Open University channel https://www.youtube.com/channel/UCXsH4hSV_kEdAOsupMMm4Qw Free learning from The Open University http://www.open.ac.uk/openlearn/science-maths-technology/science --- What sediment cores from the world's oceans reveal about climate patterns. (Part 3 of 5) Playlist Link - http://www.youtube.com/playlist?list=PL83DFCE377A217DD4 Transcript link - http://media-podcast.open.ac.uk/feeds/fsc-exploring-science-of-climate/transcript/fsc01.03.pdf --- For more information about climatic evidence from sediments visit http://www3.open.ac.uk/study/undergraduate/course/s104.htm
From glacial highs, to abyssal lows, this episode explores the many sedimentary environments and their rock forms.
Science for the Public www.scienceforthepublic.org "Working Science" mini-documentaries October 2014: Richard Murray, PhD, Boston University and National Science Foundation. Dr. Murray discusses what ocean sediment cores reveal about millions of years of Earth's climate. He explains how the drilling, loading, and analysis of the sediment cores. Dr. Murray is a leader in international research expeditions and the images in this video are mostly from one of his recent ones to obtain cores related to sediments from Asian monsoon system.
Agnostic Rhythm: Deep-Cut Grooves & Low-Slung Soul -----SUBSCRIBE----- Losoul — Sediments Losoul — Imminent EP Label: Another Picture — APP-00 Format: 12”, EP http://www.discogs.com/Losoul-Immanent-EP/release/6186496 Support the Artist - Buy the Music Soundcloud, for Agnostic Mixes: http://soundcloud.com/agnostic-rhythm Hearthis, for Agnostic Mixes: https://hearthis.at/agnostic-rhythm Facebook: https://www.facebook.com/Agnostic.Rhythm?ref=tn_tnmn * If you are the copyright holder and would like this video removed, please contact me directly and I will be pleased to do so. All recordings @128kbps.
River Geomorphology Video created by Little River Research and Design, with funding from the Missouri Department of Natural Resources. http://serc.carleton.edu/details/files/19075.html As the clip opens you see shallow flow with uniform bedmaterial transport throughout. A small low head wier or dam is installed. This produces deep subcritical flow above the dam and critical flow over it. Below the dam we see supercritical flow. The deeper, low velocity flow above the dam cannot move the coarse bedload (Q = VA, and since A is greatly increased and Q is unchanged above the dam, V is greatly decreased) and we see deposition occur until depth is shallow enough (and A small enough) that the increase in V moved bedload again. Deposition occurs to the top of the dam. When the dam is in...
Courtesy of Tech Insider --- Extreme Journey to the center of the Earth - Scientific drilling into the Earth is a way for scientists to probe the Earth's sediments, crust, and upper mantle. In addition to rock samples, drilling technology can unearth samples of connate fluids and of the subsurface biosphere, mostly microbial life, preserved in drilled samples. Most of the technology used for drilling come from advances in the oil and gas industry. Scientific drilling is carried out on land by the International Continental Scientific Drilling Program (ICDP) and at sea by the Integrated Ocean Drilling Program (IODP). Scientific drilling on the continents includes drilling down into solid ground as well as drilling from small boats on lakes. Sampling thick glaciers and ice sheets to obtain ic...
Deepwater sedimentary systems.New advances and current trends - Deepwater sedimentary systems Dorrik Stow, professor at Heriot-Watt University standed up for deepwater exploration as one of the main scientific and environmental challenges of XXI century in his conference entitled "Deepwater sedimentary systems: new advances and current trends". This knowledge, according to Stow, has a very important role for environmental control and sustainable resource exploitation because the research in deepwater sediments is a key factor, together with political control (of energy rates of consume, CO2 emissions and the increasing of world population and poverty), for the protection of the ocean. Considering these factors is the only way, according to Stow, to be able to develop a sustainable exploita...
Over 50 sediment cores have been obtained from the seabed in and outside Petermann Fjord, Greenland, during the expedition Petermann 2015. Martin Jakobsson from Stockholm University, explains how to use multicorer, pistoncorer and gravitycorer to retrieve sediment cores from the sea floor. Music: et_ – Kopeika (CC BY-NC-SA 3.0) http://www.vyvch.com/ http://creativecommons.org/licenses/by-nc-sa/3.0/
Mr. Lima discusses the sources of oceanic sediments
This movie demonstrates how a sample of seabed sediment core can be extracted by lowering from a ship a vibrocorer to the seabed. This particular animation demonstrates GeoCorer 6000 being lowered from Ireland's Marine Institute vessel, the Celtic Explorer. This animation was funded by Titanic Belfast's Ocean Exploration Centre, and forms part of their seabed simulation display, open to the public
Exploration of the deep sea over the last 40 years has resulted in astounding discoveries about the intimate connections between the biosphere and geosphere on our planet, including the discovery of chemosynthetic ecosystems at hydrothermal vents and active microbes buried in sediments, kilometers beneath the seafloor. This introductory talk will highlight the interactions between solid earth, hydrosphere, and biosphere in the oceans. Important points of discussion will include the long geological history of the deep-sea and the important linkages between rocks, water, and life on our planet; the remarkable advances in deep-sea technology that allow us to explore the deep ocean; and parallels between understanding the deep ocean on Earth and ocean worlds beyond Earth.