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Sunday, August 9, 2020 | History

1 edition of Observations of ocean fluctuations between 15 and 23 hour periods in the Pacific found in the catalog.

Observations of ocean fluctuations between 15 and 23 hour periods in the Pacific

Wayne Richard Blanding

Observations of ocean fluctuations between 15 and 23 hour periods in the Pacific

by Wayne Richard Blanding

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Published by Available from the National Technical Information Service in Springfield, Va .
Written in English


The Physical Object
Pagination38 leaves.
Number of Pages38
ID Numbers
Open LibraryOL25478773M

  Materials and Methods. Standard definition video of chance encounters with large elasmobranch carcasses observed during Subsea 7 Hercules remotely operated vehicle (ROV) operations from the vessel M. V. Bourbon Oceanteam were analysed. Four clips collected between 22 nd June and 14 th May , ranging from 29 seconds to 4 minutes 58 seconds in length .   However, the investigation of their effect on ocean transport has been predominantly modeling based (13, 21 ⇓ –23) and synoptic observations, at adequate spatial and temporal resolutions, are rare (24, 25). The mechanisms responsible for the establishment, maintenance, and energetics of such features in the Gulf of Mexico remain unclear.

Upwelling of nutrient-rich, subsurface water sustains high productivity in the ocean's eastern boundary currents. These ecosystems support a rate of fish harvest nearly times the global mean and account for >20% of the world's marine fish catch. Environmental variability is thought to be the major cause of the decadal-scale biomass fluctuations characteristic of fish populations in these. similar spatial patterns, especially over the Pacific Ocean (see Fig. 2 b, c, e, f, h, and i). Regions with positive trends of clouds and radiative fluxes in the pre- and post-hiatus periods likely shift into negative trends during the mid-hiatus period. Similar spatial patterns can be observed.

The Southern Ocean, also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. As such, it is regarded as the second-smallest of the five principal oceanic divisions: smaller than the Pacific, Atlantic, and Indian Oceans but larger than the Arctic Ocean. (Station 8: approx. 22 15'N, 6'W, location of the HALE ALOHA mooring) occupied between January and October Observations Cruises are made on approximately monthly intervals, and repeated observations of the physics, biology and chemistry of .


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Observations of ocean fluctuations between 15 and 23 hour periods in the Pacific by Wayne Richard Blanding Download PDF EPUB FB2

The observation schedule of eight samples per day every other day makes quantification of the stochastic internal wave fluctuations with frequencies between 6 cph and the Coriolis frequency (f = cpd) problematic and prone to uncertainty.

A time-domain approach was therefore : John A. Colosi, Bruce D. Cornuelle, Matthew A. Dzieciuch, Peter F. Worcester, Tarun K. Chandrayadula. Summary. The ocean is an integral component of the Earth’s climate system. It covers about 70 percent of the Earth’s surface and acts as its primary reservoir of heat and carbon, absorbing over 90 percent of the surplus heat and about 30 percent of the carbon dioxide (CO 2) associated with human activities, and receiving close to percent of fresh water lost from land ice.

Since at least the start of the 20th century, the average global sea level has been rising. Between andthe sea level rose by 16–21 cm (– in).

More precise data gathered from satellite radar measurements reveal an accelerating rise of cm ( in) from to which is a trend of roughly 30 cm (12 in) per century.

Pacific Decadal Oscillation (PDO) The Pacific Decadal Oscillation (PDO) is a long-term fluctuation that occurs in the Pacific Ocean every 20 to 30 years that is characterized by variable sea-surface temperatures in the north-central Pacific and near the Gulf of Alaska.

The PDO mainly affects weather patterns in the U.S. Pacific Northwest. Etymology. Though the peoples of Asia and Oceania have traveled the Pacific Ocean since prehistoric times, the eastern Pacific was first sighted by Europeans in the early 16th century when Spanish explorer Vasco Núñez de Balboa crossed the Isthmus of Panama in and discovered the great "southern sea" which he named Mar del Sur (in Spanish).

The ocean's current name was coined by Average depth: 4, m (14, ft). Coherency between low-frequency sea-level records and mean sea-level pressure indicated that the latter usually leads to sea-level fluctuations between 1 and days.

In many of the Great Lakes, the time period between the “high” and “low” of a seiche may be between four and seven hours. As this is very similar to the six-hour time period of the tides on the ocean, it is frequently mistaken for a tide.

It should be mentioned that the WCH observations on 11 and 12 March are at 1‐ and 15‐min temporal cadence, respectively. This does not account for the lack of long‐period fluctuations on 12 March, and significant long‐period tsunami ocean waves are seen in the DART observations sampled at a 15‐min temporal cadence on 11 March (not shown).

Earth's rotation period relative to the International Celestial Reference Frame, called its stellar day by the International Earth Rotation and Reference Systems Service (IERS), is 86 seconds of mean solar time (UT1) (23 h 56 m s, 16 mean solar days). Brainly is the knowledge-sharing community where million students and experts put their heads together to crack their toughest homework questions.

The team used observed rainfall and sea surface temperature data for the period for the study. 15 2hrs ‘Broady with natural changes in the subtropical Pacific Ocean.

Other factors may create quite large fluctuations of lake levels, but for only short periods of time lasting from minutes to several days.

The two most dramatic are storm surge and seiche. Storm surge is a sudden, and often unexpected, rise in lake level associated with a rapid change in atmospheric pressure, a pressure jump, or a storm wind. An international team of researchers from United Kingdom, Denmark, and Germany has found robust evidence for signatures of the year sunspot cycle in the tropical Pacific.

The ocean inhibits wild fluctuations in climate because the ocean _____. has a great thermal inertia. Milankovitch cycles operate over all of the following periods with the. Degradations are that the negative correlation is now much stronger than observations in the western Pacific Ocean, and it reaches into the east tropical Indian Ocean, probably because the ENSO amplitude is too large.

These improvements result from changes to the atmosphere component deep convection scheme (see Neale et al., ). The Equatorial Countercurrent of the Pacific Ocean is much weaker during the winter season, at least in the centraI part of the ocean and it may even show signs of temporary interruption.

However, in the western part of the Pacific Ocean countercurrents of lesser extent are also often observed even during the winter period. This huge volume of ice lowered global sea level by around meters as compared to today. After the ice sheets began to melt and retreat, sea level rose rapidly, with several periods of even faster spurts.

The first such spurt may have started ab years ago, at which time ocean levels rose m in less than years. Between and studies show that sea level rose between millimeters and millimeters per year on average.

Bythat rate had increased to about millimeters per year and the rate in is estimated at millimeters per year. Tropical cyclone, also called typhoon or hurricane, an intense circular storm that originates over warm tropical oceans and is characterized by low atmospheric pressure, high winds, and heavy g energy from the sea surface and maintaining its strength as long as it remains over warm water, a tropical cyclone generates winds that exceed km (74 miles) per hour.

2 Between about m and m depth, the temperature declines rapidly throughout much of the ocean. This region of steep temperature gradient is known as the permanent thermocline, beneath which, from about m to the ocean floor, there is virtually no.

Our evolving climate: communicating the effects of climate variability. by Ed Hawkins [Published in ‘Weather’ magazine] It is “very likely” that humans have caused most of the warming of the Earth’s climate since the midth century; this was a key conclusion of the 4th Assessment Report (AR4; Solomon et al., ) of the Intergovernmental Panel on Climate Change (IPCC).

Data during this period in the ocean depths were very limited so missed this increased energy around the western areas of the Pacific Ocean.

Post ′s the trade winds declined for longer periods especially beginning with the Pacific shift and moderate/strong El Nino in the early ′s.2 (3) You have been given a data set from an unknown site in the ocean, where gross production is mg C m-2 day-1, and respiration is measured at mg C m-2 day Please use short answers for the following questions: a) Calculate the new production at this location and the f ratio.