• 13 - Deep sea sediments

    Calcareous oozes; carbonate saturation, lysocline, and CCD; siliceous oozes, chert, and diatomite; abyssal red clay

    published: 27 Apr 2015
  • Ocean Sediments

    Brief review of the sediments found in the ocean -- their sources, distributions, and relative contributions. Developed for an introductory-level Oceanography Course. To access versions with CC and scripts, go to: http://www.ccsf.edu/earthrocks

    published: 09 Sep 2015
  • Mike Hall: How to determine climate history from cores of deep sea sediment

    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.

    published: 18 Jul 2013
  • Ocean Sediments: Earth's Deep Climate History

    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.

    published: 17 Dec 2014
  • Ocean Floor Sediments Demonstration

    published: 09 Feb 2012
  • Life in the Subsurface Geomicrobiology of the Deep Biosphere (Jason Sylvan)

    One of the great surprises in ecology during the last 20 years was the discovery of a vast microbial biome deep below the seafloor and terrestrial habitats. This environment, know as the deep biosphere, is the largest microbial habitat on the Earth. We now know that as many prokaryotic cells live in subseafloor sediment as in the entire oceanic water column, and microbial biomass in the basement rocks exposed at mid-ocean ridges and underlying sediments is currently unknown. Therefore, with sediments and basement rocks combined, there are likely more cells below the seafloor than in the water column, making the study of this biosphere critical to understanding marine microbiology, chemistry and geology. On land, study of the deep biosphere yielded insights into entire ecosystems 2.8 kilome...

    published: 09 Mar 2017
  • 37) Depositional Environments

    From glacial highs, to abyssal lows, this episode explores the many sedimentary environments and their rock forms.

    published: 26 Nov 2015
  • Great Animation Shows How Deep Humans Dug Into The Earth

    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...

    published: 18 Oct 2017
  • Oceanography 4 (Marine Sediments)

    published: 31 Aug 2016
  • Seabed Sediment Core Extraction Animation

    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

    published: 08 Jun 2015
  • Marine Sediments

    09-15-2011_114834

    published: 16 Sep 2011
  • Martin Jakobsson explains how to collect sediment cores from the sea floor

    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/

    published: 29 Sep 2015
  • Ocean microbes: small size, global impact | Victoria Orphan | TEDxOlympicBlvdWomen

    This may come as a surprise, but every drop of seawater is teeming with life that is invisible to the naked eye. While small in size, these ocean-dwelling microbes are central to many critical environmental processes, contributing to the oxygen in our atmosphere, controlling global carbon dioxide levels, and serving as the gate keepers for vast stores of methane in the deep sea. Collectively, they have shaped this habitable world we enjoy today, but we are just beginning to understand how marine microbial communities work and how they may respond to environmental change in the future. Dr. Victoria Orphan is a Professor of Geobiology in the Division of Geological and Planetary Sciences at Caltech. Since joining the faculty in 2004, her research has contributed new understanding of micr...

    published: 22 Dec 2016
  • Deep Sea Sediment Cores

    published: 04 May 2011
  • Microbial Life Support - Victoria Orphan - 4/11/2018

    While invisible to the naked eye, microorganisms and their interactions with each other and their environment play fundamental roles in the cycling of elements critical to life on our planet. In deep ocean sediments, billions of microorganisms compete and cooperate via a complex network of metabolic interactions that are still poorly understood, but are important in the cycling of methane and sequestration of carbon. In her April 11 Watson Lecture, Victoria J. Orphan, the James Irvine Professor of Environmental Science and Geobiology in Caltech's Division of Geological and Planetary Sciences, talks about the activities of marine microorganisms from those at the ocean surface to those deep in the earth's crust, and considers the globally important geochemical processes they orchestrate thr...

    published: 18 Apr 2018
  • Earth.Parts #15 - Relative age-dating of rocks; sediments, superposition, hints of deep time

    Methods of determining the relative ages of different rock formations in the Earth's crust. Please subscribe & share!

    published: 05 Jan 2017
  • Deep Sea Sediments Volume 63 Developments in Sedimentology

    published: 17 Dec 2016
  • Hydraulic jump, low head dam installation, and coarse sediment transport

    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...

    published: 26 Feb 2010
  • Vibracoring: Reconstructing the past from Earth sediments

    http://gallery.usgs.gov/videos/534 Geologists rely on information from deep beneath the Earth's surface to reconstruct the past. As sediments accumulate over time, they create records geologists use to understand Earth history and to predict future processes and trends. The most common way to get this information is to drill a hole in the Earth where sediments have been deposited over time. The type of drilling tool used for cores depends on how deep and how hard the sediments are. Vibracoring is one of the tools used in shallow coastal areas where sediments consist of soft sand and mud. This video podcast describes how cores are collected in shallow water from the deck of a research vessel using vibracoring. The sediments drilled are recovered in the form of a core that will contain an i...

    published: 18 Apr 2012
  • Climatic Evidence From Sediments - Exploring the Science of Climate (3/5)

    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

    published: 26 Jul 2011
  • Fine Grained Sediments Deep Water Processes and Facies Geological Society special publication

    published: 07 Dec 2016
  • SANDSTONE, SEDIMENTS AND SWASTIKAS - PNHA GEOLOGY WALK, PART 1

    Doctor Peter Mitchell OAM explains the geology of the Hawkesbury sandstone at Deep Creek near Narrabeen, and a fascinating history written upon it.

    published: 17 Nov 2012
  • Deep Carbon Modelling: Sediment Thickness and Subduction Zone Evolution, 230 - 0 Ma

    Reconstruction of tectonic plates and seafloor sediment thickness from 230 Ma to present day using the Müller et al. (2016) plate model (http://www.earthbyte.org/ocean-basin-evolution-and-global-scale-plate-reorganization-events-since-pangea-breakup/). Animations were produced for the DCO-funded project, 'Spatio-temporal modelling of deep time atmospheric carbon flux from subduction zone interactions with carbonate platforms.' (http://www.earthbyte.org/deep-carbon-modelling-and-visualisation-project/)

    published: 16 Sep 2016
  • Download Ocean Chemistry and Deep Sea Sediments Book

    published: 13 Feb 2017
developed with YouTube
13 - Deep sea sediments
14:41

13 - Deep sea sediments

  • Order:
  • Duration: 14:41
  • Updated: 27 Apr 2015
  • views: 4974
videos
Calcareous oozes; carbonate saturation, lysocline, and CCD; siliceous oozes, chert, and diatomite; abyssal red clay
https://wn.com/13_Deep_Sea_Sediments
Ocean Sediments
15:05

Ocean Sediments

  • Order:
  • Duration: 15:05
  • Updated: 09 Sep 2015
  • views: 11105
videos
Brief review of the sediments found in the ocean -- their sources, distributions, and relative contributions. Developed for an introductory-level Oceanography Course. To access versions with CC and scripts, go to: http://www.ccsf.edu/earthrocks
https://wn.com/Ocean_Sediments
Mike Hall: How to determine climate history from cores of deep sea sediment
6:39

Mike Hall: How to determine climate history from cores of deep sea sediment

  • Order:
  • Duration: 6:39
  • Updated: 18 Jul 2013
  • views: 1329
videos
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.
https://wn.com/Mike_Hall_How_To_Determine_Climate_History_From_Cores_Of_Deep_Sea_Sediment
Ocean Sediments: Earth's Deep Climate History
17:22

Ocean Sediments: Earth's Deep Climate History

  • Order:
  • Duration: 17:22
  • Updated: 17 Dec 2014
  • views: 393
videos
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.
https://wn.com/Ocean_Sediments_Earth's_Deep_Climate_History
Ocean Floor Sediments Demonstration
3:59

Ocean Floor Sediments Demonstration

  • Order:
  • Duration: 3:59
  • Updated: 09 Feb 2012
  • views: 4385
videos
https://wn.com/Ocean_Floor_Sediments_Demonstration
Life in the Subsurface  Geomicrobiology of the Deep Biosphere (Jason Sylvan)
18:38

Life in the Subsurface Geomicrobiology of the Deep Biosphere (Jason Sylvan)

  • Order:
  • Duration: 18:38
  • Updated: 09 Mar 2017
  • views: 219
videos
One of the great surprises in ecology during the last 20 years was the discovery of a vast microbial biome deep below the seafloor and terrestrial habitats. This environment, know as the deep biosphere, is the largest microbial habitat on the Earth. We now know that as many prokaryotic cells live in subseafloor sediment as in the entire oceanic water column, and microbial biomass in the basement rocks exposed at mid-ocean ridges and underlying sediments is currently unknown. Therefore, with sediments and basement rocks combined, there are likely more cells below the seafloor than in the water column, making the study of this biosphere critical to understanding marine microbiology, chemistry and geology. On land, study of the deep biosphere yielded insights into entire ecosystems 2.8 kilometers below the surface that are comprised of a single microbe, as well as incredibly diverse ecosystems that changed our understanding of microbial diversity and metabolism.
https://wn.com/Life_In_The_Subsurface_Geomicrobiology_Of_The_Deep_Biosphere_(Jason_Sylvan)
37) Depositional Environments
14:47

37) Depositional Environments

  • Order:
  • Duration: 14:47
  • Updated: 26 Nov 2015
  • views: 19386
videos
From glacial highs, to abyssal lows, this episode explores the many sedimentary environments and their rock forms.
https://wn.com/37)_Depositional_Environments
Great Animation Shows How Deep Humans Dug Into The Earth
2:54

Great Animation Shows How Deep Humans Dug Into The Earth

  • Order:
  • Duration: 2:54
  • Updated: 18 Oct 2017
  • views: 21849
videos
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 ice cores is related but will not be described further here. Like probes sent into outer space, scientific drilling is a technology used to obtain samples from places that people cannot reach. Human beings have descended as deep as 2,080 m (6,822 ft) in Voronya Cave, the world's deepest known cave, located in the Caucasus mountains of the country of Georgia. Gold miners in South Africa regularly go deeper than 3,400 m, but no human has ever descended to greater depths than this below the Earth's solid surface. As depth increases into the Earth, temperature and pressure rise. Temperatures in the crust increase about 15°C per kilometer, making it impossible for humans to exist at depths greater than several kilometers, even if it was somehow possible to keep shafts open in spite of the tremendous pressure. Scientific drilling is interdisciplinary and international in scope. Individual scientists cannot generally undertake scientific drilling projects alone. Teamwork between scientists, engineers, and administrators is often required for success in planning and in carrying out a drilling project, analyzing the samples, and interpreting and publishing the results in scientific journals. Humans have reached the moon and are planning to return samples from Mars, but when it comes to exploring the land deep beneath our feet, we have only scratched the surface of our planet. This may be about to change with a $1 billion mission to drill 6 km (3.7 miles) beneath the seafloor to reach the Earth's mantle -- a 3000 km-thick layer of slowly deforming rock between the crust and the core which makes up the majority of our planet -- and bring back the first ever fresh samples. It could help answer some of our biggest questions about the origins and evolution of Earth itself, with almost all of the sea floor and continents that make up the Earth´s surface originating from the mantle. Geologists involved in the project are already comparing it to the Apollo Moon missions in terms of the value of the samples it could yield. However, in order to reach those samples, the team of international scientists must first find a way to grind their way through ultra-hard rocks with 10 km-long (6.2 miles) drill pipes -- a technical challenge that one of the project co-leaders Damon Teagle, from the UK's University of Southampton calls, "the most challenging endeavor in the history of Earth science." 'A ship flying in space:' Earth seen through the eyes of an astronaut Their task will be all the more difficult for being conducted out in the middle of the ocean. It is here that the Earth´s crust is at its thinnest at around 6 km compared to as much as 60 km (37.3 miles) on land. Drilling all the way to the mantle would also give geologists a look at what they call the Mohorovičić discontinuity, or Moho, for short. Above this mysterious zone, named for the Croatian seismologist who discovered it in 1909, seismic waves travel at around 4.3 miles per second, a rate consistent with those waves traveling through basalt, or cooled lava. Below the Moho, the waves rip along at around 5 miles per second, similar to the rate they travel through a silica-poor type of igneous rock called peridotite. The Moho typically lies between 3 to 6 miles below the ocean floor and anywhere between 12 to 56 miles beneath the continents. This zone has long been considered the crust-mantle boundary, where material gradually cools and sticks to the overlying crust. But some lab studies suggest it’s possible that the Moho represents the zone where water seeping down from the overlying crust reacts with mantle peridotites to create a type of mineral called serpentine. This possibility is exciting, Dick and MacLeod suggest. The geochemical reactions that generate serpentine also produce hydrogen, which can then react with seawater to produce methane, a source of energy for some types of bacteria. Or, the researchers note, the Moho could be something else entirely unknown to science. Music: Land of Giants by Dhruva Aliman https://dhruvaaliman.bandcamp.com/album/road-of-fortunes http://www.dhruvaaliman.com/
https://wn.com/Great_Animation_Shows_How_Deep_Humans_Dug_Into_The_Earth
Oceanography 4 (Marine Sediments)
46:34

Oceanography 4 (Marine Sediments)

  • Order:
  • Duration: 46:34
  • Updated: 31 Aug 2016
  • views: 3500
videos
https://wn.com/Oceanography_4_(Marine_Sediments)
Seabed Sediment Core Extraction Animation
1:47

Seabed Sediment Core Extraction Animation

  • Order:
  • Duration: 1:47
  • Updated: 08 Jun 2015
  • views: 3872
videos
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
https://wn.com/Seabed_Sediment_Core_Extraction_Animation
Marine Sediments
12:06

Marine Sediments

  • Order:
  • Duration: 12:06
  • Updated: 16 Sep 2011
  • views: 2277
videos
09-15-2011_114834
https://wn.com/Marine_Sediments
Martin Jakobsson explains how to collect sediment cores from the sea floor
3:24

Martin Jakobsson explains how to collect sediment cores from the sea floor

  • Order:
  • Duration: 3:24
  • Updated: 29 Sep 2015
  • views: 1024
videos
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/
https://wn.com/Martin_Jakobsson_Explains_How_To_Collect_Sediment_Cores_From_The_Sea_Floor
Ocean microbes: small size, global impact | Victoria Orphan | TEDxOlympicBlvdWomen
12:16

Ocean microbes: small size, global impact | Victoria Orphan | TEDxOlympicBlvdWomen

  • Order:
  • Duration: 12:16
  • Updated: 22 Dec 2016
  • views: 1298
videos
This may come as a surprise, but every drop of seawater is teeming with life that is invisible to the naked eye. While small in size, these ocean-dwelling microbes are central to many critical environmental processes, contributing to the oxygen in our atmosphere, controlling global carbon dioxide levels, and serving as the gate keepers for vast stores of methane in the deep sea. Collectively, they have shaped this habitable world we enjoy today, but we are just beginning to understand how marine microbial communities work and how they may respond to environmental change in the future. Dr. Victoria Orphan is a Professor of Geobiology in the Division of Geological and Planetary Sciences at Caltech. Since joining the faculty in 2004, her research has contributed new understanding of microbial interactions in extreme environments and their impact on the cycling of carbon and nutrients in the oceans. Much of her work focuses on microorganisms living in deep-sea sediments that sequester large quantities of methane venting from the ocean floor. Orphan studies microbial life in these remote environments using research ships and manned and robotic submersibles. In the lab, she employs novel methods that combine molecular biology, microscopy, and geochemistry to directly study the activity and intimate relationships between different microbes in their natural habitat. By tackling fundamental questions in microbial ecology, Orphan and her team are uncovering the microbial activities and processes that are central to the cycling of carbon, sulfur, and nitrogen in the deep sea. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
https://wn.com/Ocean_Microbes_Small_Size,_Global_Impact_|_Victoria_Orphan_|_Tedxolympicblvdwomen
Deep Sea Sediment Cores
7:46

Deep Sea Sediment Cores

  • Order:
  • Duration: 7:46
  • Updated: 04 May 2011
  • views: 930
videos
https://wn.com/Deep_Sea_Sediment_Cores
Microbial Life Support - Victoria Orphan - 4/11/2018
42:52

Microbial Life Support - Victoria Orphan - 4/11/2018

  • Order:
  • Duration: 42:52
  • Updated: 18 Apr 2018
  • views: 0
videos
While invisible to the naked eye, microorganisms and their interactions with each other and their environment play fundamental roles in the cycling of elements critical to life on our planet. In deep ocean sediments, billions of microorganisms compete and cooperate via a complex network of metabolic interactions that are still poorly understood, but are important in the cycling of methane and sequestration of carbon. In her April 11 Watson Lecture, Victoria J. Orphan, the James Irvine Professor of Environmental Science and Geobiology in Caltech's Division of Geological and Planetary Sciences, talks about the activities of marine microorganisms from those at the ocean surface to those deep in the earth's crust, and considers the globally important geochemical processes they orchestrate through metabolic collaboration. Orphan's specific research interests include the structure and function of microbial communities in the deep subsurface, deep ocean sediments, oil and gas seeps, and environments that represent analogs for that of early Earth; her work has a specific emphasis on the interactions that occur between microbes that produce and consume methane. Orphan earned her PhD at the UC Santa Barbara in 2001, and started at Caltech as an assistant professor 2004, and was named the James Irvine Professor of Environmental Science and Geobiology in 2016. Produced in association with Caltech Academic Media Technologies. ©2018 California Institute of Technology
https://wn.com/Microbial_Life_Support_Victoria_Orphan_4_11_2018
Earth.Parts #15 - Relative age-dating of rocks; sediments, superposition, hints of deep time
15:18

Earth.Parts #15 - Relative age-dating of rocks; sediments, superposition, hints of deep time

  • Order:
  • Duration: 15:18
  • Updated: 05 Jan 2017
  • views: 1520
videos
Methods of determining the relative ages of different rock formations in the Earth's crust. Please subscribe & share!
https://wn.com/Earth.Parts_15_Relative_Age_Dating_Of_Rocks_Sediments,_Superposition,_Hints_Of_Deep_Time
Deep Sea Sediments Volume 63 Developments in Sedimentology
0:16

Deep Sea Sediments Volume 63 Developments in Sedimentology

  • Order:
  • Duration: 0:16
  • Updated: 17 Dec 2016
  • views: 65
videos
https://wn.com/Deep_Sea_Sediments_Volume_63_Developments_In_Sedimentology
Hydraulic jump, low head dam installation, and coarse sediment transport
1:20

Hydraulic jump, low head dam installation, and coarse sediment transport

  • Order:
  • Duration: 1:20
  • Updated: 26 Feb 2010
  • views: 111719
videos
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 installed, we see a classic disruption in sediment transport continuity. Coarse transport essentially ceases through the dam until deposition builds a higher streambed. Sediment is blown out below the dam (often scoured to bedrock in the real world) This is the well known "hungry water" effect seen below dams. At low-water crossings in the Missouri Ozarks, many of which are essentially low dams, we often see this condition, manifested as a wide, sediment-filled channel with low banks upstream of the bridge. This contrasts with a deep, scoured channel below, sometimes with high, unstable banks. At the end of the demonstration, the downstream gate is lowered and a hydraulic jump appears which is then drowned as stage increases. The depositional dune and slipface then move past the dam. The gate is then raised somewhat, allowing a jump to reform and sediment is blown out below the dam.
https://wn.com/Hydraulic_Jump,_Low_Head_Dam_Installation,_And_Coarse_Sediment_Transport
Vibracoring: Reconstructing the past from Earth sediments
6:49

Vibracoring: Reconstructing the past from Earth sediments

  • Order:
  • Duration: 6:49
  • Updated: 18 Apr 2012
  • views: 2493
videos
http://gallery.usgs.gov/videos/534 Geologists rely on information from deep beneath the Earth's surface to reconstruct the past. As sediments accumulate over time, they create records geologists use to understand Earth history and to predict future processes and trends. The most common way to get this information is to drill a hole in the Earth where sediments have been deposited over time. The type of drilling tool used for cores depends on how deep and how hard the sediments are. Vibracoring is one of the tools used in shallow coastal areas where sediments consist of soft sand and mud. This video podcast describes how cores are collected in shallow water from the deck of a research vessel using vibracoring. The sediments drilled are recovered in the form of a core that will contain an intact record of the past. Core samples are used to assess the geologic history of an area, such as its geomorphology; coastal, marine, and terrestrial processes; and changes in environmental quality.
https://wn.com/Vibracoring_Reconstructing_The_Past_From_Earth_Sediments
Climatic Evidence From Sediments - Exploring the Science of Climate (3/5)
3:30

Climatic Evidence From Sediments - Exploring the Science of Climate (3/5)

  • Order:
  • Duration: 3:30
  • Updated: 26 Jul 2011
  • views: 1766
videos
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
https://wn.com/Climatic_Evidence_From_Sediments_Exploring_The_Science_Of_Climate_(3_5)
Fine Grained Sediments Deep Water Processes and Facies Geological Society special publication
0:16

Fine Grained Sediments Deep Water Processes and Facies Geological Society special publication

  • Order:
  • Duration: 0:16
  • Updated: 07 Dec 2016
  • views: 4
videos
https://wn.com/Fine_Grained_Sediments_Deep_Water_Processes_And_Facies_Geological_Society_Special_Publication
SANDSTONE, SEDIMENTS AND SWASTIKAS - PNHA GEOLOGY WALK, PART 1
27:30

SANDSTONE, SEDIMENTS AND SWASTIKAS - PNHA GEOLOGY WALK, PART 1

  • Order:
  • Duration: 27:30
  • Updated: 17 Nov 2012
  • views: 1137
videos
Doctor Peter Mitchell OAM explains the geology of the Hawkesbury sandstone at Deep Creek near Narrabeen, and a fascinating history written upon it.
https://wn.com/Sandstone,_Sediments_And_Swastikas_Pnha_Geology_Walk,_Part_1
Deep Carbon Modelling: Sediment Thickness and Subduction Zone Evolution, 230 - 0 Ma
0:29

Deep Carbon Modelling: Sediment Thickness and Subduction Zone Evolution, 230 - 0 Ma

  • Order:
  • Duration: 0:29
  • Updated: 16 Sep 2016
  • views: 98
videos
Reconstruction of tectonic plates and seafloor sediment thickness from 230 Ma to present day using the Müller et al. (2016) plate model (http://www.earthbyte.org/ocean-basin-evolution-and-global-scale-plate-reorganization-events-since-pangea-breakup/). Animations were produced for the DCO-funded project, 'Spatio-temporal modelling of deep time atmospheric carbon flux from subduction zone interactions with carbonate platforms.' (http://www.earthbyte.org/deep-carbon-modelling-and-visualisation-project/)
https://wn.com/Deep_Carbon_Modelling_Sediment_Thickness_And_Subduction_Zone_Evolution,_230_0_Ma
Download Ocean Chemistry and Deep Sea Sediments Book
0:22

Download Ocean Chemistry and Deep Sea Sediments Book

  • Order:
  • Duration: 0:22
  • Updated: 13 Feb 2017
  • views: 4
videos
https://wn.com/Download_Ocean_Chemistry_And_Deep_Sea_Sediments_Book
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