They also can help to build up the beach as they encourage to backwash to flow parallel to the groyne‚ lengthening it Impermeable groynes do not allow any material to pass through them and this deprives parts of the beach of sediment. Permeable groynes allow some sediment to pass through them and build up down-drift sides Cost = £1000 per metre Found in Cromer‚ Overstrand‚ Trimingham and Sheringham It should last for 100 years‚ but if it gets damaged it needs to be repaired every 20 years Sea
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Midterm #2 is THURS 11/8/12 in lecture EBS 309: bring 100 question scantron & #2 pencil This exam covers material from lectures #9 (9/27/12) through #19 (11/1/12) Remember – you should take an ACTIVE role in studying – test yourself by trying to explain concepts to others or to yourself with no notes. Find a partner or group to study REGULARLY with – it is not pos sible to learn in 1 night! If needed‚ seek help with plenty of time before the test. Lecture #9 (9/27/12): Phytoplankton‚ Picoplankton
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The Sacramento River Originating in the Klamath Mountains‚ the Sacramento River is the largest river in California‚ draining over 70‚000 kilometers. Located within Northern and Central California‚ the Sacramento River flows south for about 412 kilometers until it reaches the San Francisco Bay and the Sacramento-San Joaquin River Delta. The Sacramento River runs through 19 Californian counties‚ being bounded by Sierra Nevada and Coast Rangers‚ area known as the Sacramento Valley. For about 12‚000
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Science! ! P. 517 # 9‚ 10‚ 11‚ 12! ! 9. Why does the thickness of ocean floor sediments increase the farther they are from a ridge?! -Thickness of ocean floor sediments increase the farther they are from a ridge because when new rocks form at the ridge‚ old rocks move away from the centre and this rocks stack along the end of sediments which pile up for long time that creates thick sediments‚! ! 10. How does sea floor spreading explain the movement of tectonic plates?! - Sea floor spreading in
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carbon stored in lake sediments is mostly dependent on the amount of productivity in the lake at that time. During photosynthesis‚ diatoms are able to turn carbon dioxide into organic carbon which generates oxygen. However‚ since the shells are heavy the diatoms that die will take the carbon out of the surface waters and into the sediments. Higher rates of productivity mean more plankton and diatoms which result in a higher percentage of organic carbon stored into the sediments. Figure 2 shows that
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They believe that that it took billions of years for earth to form. Others believe that God created the earth in seven days‚ and that the earth is young. There are plenty of evidence that earth is young. For example‚ there is only a little bit of sediment on the seafloor‚ but if the earth is 4 billion years old there would be more. Another example‚ is if the earth was old soft tissue would not be found in fossils. Secular scientist and Christian scientist both use different methods on figuring out
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interpret this depositional environment as a braided river system. Braided rivers systems are capable of a high bed load of sediments‚ high flow energy‚ and still not too far from the
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Geology internal Surface feature: Kiwi point quarry rock face Johnsonville Shops Reference: http://maps.google.co.nz/ Ngauranga gorge Kiwi point quarry Reference: http://maps.google.co.nz/ Exposed quarry rock face from the road in Ngauranga gorge (picture 1). Take note that most of the other photos after this are taken of the rocks behind the trees and below it. Outline of kiwi point quarry Roughly 4m The picture to the left is a picture of the bottom of the rock face in
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237). The high sediment deposition load might have gradually aggravated erosion and deformation of the embankment beyond the bearing capacity of the foundation. Furthermore‚ high rates of degradation might have increased the sediment load along the catchment area. Generally‚ excessive sediment deposition in earthen dams reduces their storage capacity as well as the recharge capacity of aquifers. The primary sediments reported at the site were highly erodible silts
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When soil or sediment and nutrients are mixed with precipitation‚ it runs into rivers and lakes. The excess sediment and nutrients are then mixed within the water‚ causing the water to pollute. According to “Watershed Basics‚” Iowa DNR‚ sediment is the most popular pollutant. It can originate from farms‚ livestock pastures‚ and woodlands. Sediment then collects in the water‚ and creates a sheet like cover on the surface. It also
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