Deep Connections: Differences Between Deep Ocean and Surface Currents
The flow of ocean currents follows predictable patterns governed by a variety of physical factors. For surface currents, which include water flow horizontally in the upper four hundred meters of the ocean, wind is the primary driving force. For deep...
Deep Connections: Deep Ocean Circulation and Global Climate
Some scientists are concerned that just as thermohaline circulation has changed significantly over time, it could change again and possibly cause abrupt climate change in both the United States and Europe.
Going with the Flow: Measuring Ocean Currents
Given the importance of ocean currents in the marine environment, oceanographers have tried for years to accurately measure them. Advances in current meters and acoustic technology have made the process easier, but the task of measuring currents rem...
Going with the Flow: Forecasting El Nino Events
Once an El Nino event is underway, scientists have a good idea of how it's likely to behave over the subsequent six to nine months. But predicting the onset of such events in advance has proven to be very difficult.
Going with the Flow: Ocean Circulation Patterns
Among the largest structural features in the open ocean are the subtropical gyres that occur in the major ocean basins. But while gyres loom large in the overall scheme of ocean circulation, patterns of surface current motion can often be quite vari...
Going with the Flow: Ocean Currents: Cause and Effect
In addition to their role in El Nino and other weather events, ocean currents are also important for delivering nutrients, especially along coastlines, and for facilitating the movement of planktonic organisms. Surface currents are influenced by sev...
Its in the Water: Salinity, Density, and Temperature
Obtaining accurate salinity measurements is vitally important because salt, along with temperature, has a significant impact on the density of seawater. And this, in turn, greatly affects ocean structure and circulation.
Going with the Flow: El Nino
El Nino is marked by the appearance from time to time of warm water in the central and eastern Pacific Ocean. The end result of the evaporative process that follows is excessive rainfall.
Beneath the Surface: Physical Processes and Marine Chemistry
Marine chemistry is used to understand physical processes, such as ocean circulation, as well as various biological processes.
Dirty Water: Global Climate Change and Sea Level Rise
Many scientists are convinced that there is a connection between global climate change and the increase of carbon dioxide in the atmosphere. Those who believe that global warming is a real and serious problem often cite sea level rise as one reason ...