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pices xv - North Pacific Marine Science Organization
pices xv - North Pacific Marine Science Organization

... spring in the area, reaching a peak in March. Some variables showed anomalies during the study period, including weak wind stress in 1990 and 1998, high SST in 1998, and an increase of large copepod biomass in the Kuroshio in 1999 and 2000. In contrast with these anomalies, winter copepod biomass in ...
MS Word - Lehigh`s Environmental Initiative
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... Step 4: Learn about surface heat flow near hotspots. Most of the Earth’s heat is released at plate boundaries, but some volcanoes form at hotspots. A hotspot is an area where material from deep within the mantle rises and melts through a lithospheric plate. Hotspot volcanoes can occur in the middle ...
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... al., 2004). Thus, there is a direct correlation between atmospheric CO2 and the ocean’s pH (Feeley et al., 2004) (Figure 1). In the ocean, CO2 combines with water to form carbonic acid, which becomes bicarbonate ions (HCO3-) and hydrogen ions (H+), reducing the pH of the water, making it more acidic ...
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Chapter 2 - Petal School District
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... The diagram at the right shows that Earth is composed of three main layers — the core, the mantle, and the crust. At the very center of the planet is a super-hot but solid inner core. Scientists believe that the inner core is made up of iron and nickel under enormous pressure. Surrounding the inner ...
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... making late April and May highly variable in terms of wind speeds and cloud amount. During this period storms originating in Mongolia may cause strong, warm westerlies carrying yellow desert sand (termed the ''Yellow Wind''). By late May and early June the summer surface atmospheric low pressure sys ...
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... and simulate the past climate with a similar amount of detail as is done for the present to better understand the climate system when it is forced far beyond its present state. Simulating deep time palaeoclimate is challenging, since the applied boundary conditions can be poorly constrained. Between ...
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... contains  22  Bq/kg,  whereas  the  Baltic  Sea  only  has  4  Bq/kg  (Walker  and  Rose,   1990).  The  correlation  between  radioactivity  and  salinity,  i.e.  mainly  the   concentration  of  Na+  and  Cl-­‐,  can  be  explained  b ...
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... 3. The oldest ocean crust is about 180 million years old. Some continental rocks are about 3.9 billion years old. 4. an area where a plume of hot mantle material rises up and causes volcanic activity 5. Hot spots are relatively stationary plumes of hot rock from the mantle. As a plate moves over a h ...
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1 Lecture 12 - What Controls the Composition of River Water and

... Lars Gunnar Sillén a Swedish inorganic chemist who specialized in solution chemistry in 1959 proposed that the ionic composition of seawater might be controlled by equilibrium reactions between the dissolved ions and various minerals occurring in marine sediments. Sillén (1961) argued that Goldschmi ...
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... decline from warm temperatures in the early 1950s to very cold temperatures in the mid1960s, a sharp rise in the late 1960s and above normal temperatures through the 1970s to the mid-1980s. This temperature pattern was generally observed at all depths and throughout the entire region although the ex ...
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Earth Systems Student Workbook Unit 4

... The plates that make up the earth’s crust sit directly on a “plastic” layer of the mantle called the Asthenosphere. Holmes found evidence to prove that tectonic plates moved on what he referred to as convection currents. REMEMBER: Convection happens because of heat in liquids. Heat in Earth comes fr ...
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Chapter 2: The Earth - IWA Social Studies ​​Ms. LaMarche

... Jupiter in a region called the asteroid belt. A few asteroids follow paths that cross the earth’s orbit. Comets, made of icy dust particles and frozen gases, look like bright balls with long, feathery tails. Their orbits are inclined at every possible angle to the earth’s orbit. They may approach fr ...
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... vents might occur in undersea volcanic areas, but this was the first time anyone had seen one. So what gave scientists the idea that thermal vents existed? Scientists thought that as the new seafloor formed at the ridges, rocks would split. This would allow seawater to seep into the hotter parts of ...
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Ocean



An ocean (from Ancient Greek Ὠκεανός, transc. Okeanós, the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean, which covers almost 71% of its surface. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern, and Arctic Oceans. The word sea is often used interchangeably with ""ocean"" in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land.Saline water covers approximately 72% of the planet's surface (~3.6×108 km2) and is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of Earth's surface. The ocean contains 97% of Earth's water, and oceanographers have stated that only 5% of the World Ocean has been explored. The total volume is approximately 1.35 billion cubic kilometers (320 million cu mi) with an average depth of nearly 3,700 meters (12,100 ft).As it is the principal component of Earth's hydrosphere, the world ocean is integral to all known life, forms part of the carbon cycle, and influences climate and weather patterns. It is the habitat of 230,000 known species, although much of the oceans depths remain unexplored, and over two million marine species are estimated to exist. The origin of Earth's oceans remains unknown; oceans are thought to have formed in the Hadean period and may have been the impetus for the emergence of life.Extraterrestrial oceans may be composed of water or other elements and compounds. The only confirmed large stable bodies of extraterrestrial surface liquids are the lakes of Titan, although there is evidence for the existence of oceans elsewhere in the Solar System. Early in their geologic histories, Mars and Venus are theorized to have had large water oceans. The Mars ocean hypothesis suggests that nearly a third of the surface of Mars was once covered by water, and a runaway greenhouse effect may have boiled away the global ocean of Venus. Compounds such as salts and ammonia dissolved in water lower its freezing point, so that water might exist in large quantities in extraterrestrial environments as brine or convecting ice. Unconfirmed oceans are speculated beneath the surface of many dwarf planets and natural satellites; notably, the ocean of Europa is estimated to have over twice the water volume of Earth. The Solar System's giant planets are also thought to have liquid atmospheric layers of yet to be confirmed compositions. Oceans may also exist on exoplanets and exomoons, including surface oceans of liquid water within a circumstellar habitable zone. Ocean planets are a hypothetical type of planet with a surface completely covered with liquid.
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