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An Acoustic Doppler Current Profiler (ADCP) is a scientific instrument used to measure the velocity of water currents in various aquatic environments, such as rivers, lakes, and oceans. It utilizes the Doppler effect, which describes the change in frequency of waves in relation to an observer moving relative to the source of the waves. ### How it Works: 1. **Acoustic Pulses**: The ADCP emits sound pulses (acoustic waves) into the water column.
Accretion in coastal management refers to the process of sediment accumulation along the coastline, which can lead to the gradual buildup of land. This natural phenomenon can occur through various mechanisms, such as the deposition of sediments transported by waves, currents, and tidal actions. In the context of coastal management, accretion is significant because it can help mitigate the effects of coastal erosion, support the development of land habitats, and contribute to the stability of coastlines.
An abyssal plain is a flat or gently sloping area of the ocean floor, typically found at depths between 3,000 to 6,000 meters (approximately 10,000 to 20,000 feet). These plains are among the Earth's most extensive and least explored environments, covering more than 50% of the Earth's surface. Abyssal plains are primarily composed of sediments, including clay, silt, and organic material that has settled from the water column above.
ABISMO refers to the "Automated Biological Information Systems for Monitoring and Observation." It is a system developed to collect, analyze, and manage biological data, particularly in the context of environmental monitoring and biodiversity assessment. While specific details about ABISMO can vary based on its application and the organization utilizing it, the primary aim is to use automated systems to enhance the efficiency and accuracy of biological data collection and monitoring efforts.
Water waves are disturbances that travel through water, caused by the transfer of energy through the medium. They occur when energy is applied to water, leading to the oscillation of water molecules at the surface of the body of water. There are two primary types of water waves: 1. **Capillary Waves**: These are small waves that occur when the water surface is disturbed, typically at a scale of a few centimeters or less.
Water masses are large volumes of ocean water that have distinct characteristics, such as temperature, salinity, and density, which differentiate them from surrounding water. These characteristics are shaped by their formation processes, which include mixing, evaporation, precipitation, and interactions with the atmosphere and ice. Water masses are important in oceanography and climatology because they influence global circulation patterns, climate, and marine ecosystems.
Tides are the regular rise and fall of sea levels caused primarily by the gravitational pull of the moon and the sun on Earth. This phenomenon results in predictable changes in water levels along coastlines, typically occurring in cycles of approximately 12 hours and 25 minutes between high and low tides.
Physical oceanographers are scientists who study the physical characteristics and processes of the ocean. This field of oceanography focuses on various aspects, such as ocean currents, wave dynamics, temperature and salinity distributions, density stratification, and the interaction between the ocean and the atmosphere.
Oceanic gyres are large systemsof circulating ocean currents formed by the combined effects of wind, the Coriolis effect, and the continents. These gyres play a significant role in regulating the Earth's climate, ocean circulation, and marine ecosystems. There are five major oceanic gyres in the world: 1. **North Atlantic Gyre**: Located in the North Atlantic Ocean, it includes the Gulf Stream, the North Atlantic Current, the Canary Current, and the North Equatorial Current.
Ocean currents are large-scale movements of seawater that flow through the world's oceans. These currents are driven by a combination of factors, including wind patterns, the Earth's rotation (the Coriolis effect), temperature differences, salinity variations, and the shape of coastlines and ocean basins. There are two main types of ocean currents: 1. **Surface Currents**: These currents occur in the upper layer of the ocean and are primarily driven by wind.
"Marine geography stubs" typically refers to short or incomplete articles on marine geography topics within a collaborative platform like Wikipedia. Stubs are articles that provide limited information and are often marked as such, indicating that they need expansion and additional content to cover the topic more comprehensively. Marine geography itself is a subfield of geography that focuses on the study of marine environments, including oceans, seas, and coastal areas.
Coastal and oceanic landforms refer to the various natural structures and features found at the interface between land and ocean, as well as within oceanic environments. Below is a brief overview of both categories: ### Coastal Landforms: These landforms are shaped by the interactions between land and sea, including processes like erosion, deposition, and wave action.
Weyl's postulate, formulated by Hermann Weyl in 1921, is a hypothesis relating to the large-scale structure of the universe. According to Weyl's postulate, at a sufficiently large scale, the universe is homogeneous and isotropic; that is, it appears the same in all directions (isotropic) and has a uniform distribution of matter (homogeneous) when averaged over large enough volumes.
The Ursa Major Filament is a vast cosmic structure in the universe consisting of a group of galaxies and galaxy clusters that are connected by gravitational forces and dark matter. This filament is part of the larger cosmic web, which is the large-scale structure of the universe. The filament gets its name from its location in the sky near the Ursa Major constellation. Cosmic filaments are critically important for cosmology, as they provide insights into the formation of galaxies and the distribution of matter in the universe.
The Giant Arc refers to a massive cosmic structure discovered in recent astronomical surveys. It is characterized as a large-scale arrangement of galaxies and galaxy clusters that spans a significant portion of the observable universe. The Giant Arc stretches for about 3.3 billion light-years and is notable for containing a relatively low density of matter compared to other regions.
In cosmology, "texture" refers to a theoretical model of the universe that describes certain types of topological defects, particularly in the context of scalar fields in the early universe. These textures are solutions to field equations that arise in various field theories, particularly those involving spontaneous symmetry breaking. Textures are characterized by regions of space where scalar fields take on different vacuum states, leading to the formation of localized structures in the cosmic medium.
The term "Shapley Attractor" is often associated with concepts in game theory and economics, particularly in the context of cooperative games and the allocation of resources. However, the phrase may also appear in other scientific fields such as dynamical systems and ecology. In the context of game theory, the Shapley value, developed by Lloyd Shapley, is a solution concept that assigns a value to each player based on their contributions to the total payoff.
A radio halo is a type of diffuse emission found in some galaxy clusters, which appears as a large, extended region of radio waves emitting cosmic rays and relativistic electrons. Radio halos are typically associated with the presence of turbulent magnetic fields and are thought to be a result of the interactions within the intracluster medium (ICM) during cluster mergers. These structures are observed at wavelengths of several centimeters to several meters and are often studied using radio telescopes.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





