Sentences with phrase «upwelling events»

A warm band of relatively constant temperature (18 - 22 °C) and salinity (36.0 - 36.2 psu) is observed near the bottom year - round just inshore of the shelf break, bounded by seasonally variable waters on the inshore side, and by fluctuating waters subject to cool - water upwelling events and warm Gulf Stream intrusions on the offshore side.

Accordingly, upwelling of waters acidified by anthropogenic CO2 has led to a further decrease in surface pH, as reported in the eastern Pacific Ocean along the west coast of North America, from central Canada to northern Mexico, where shoaling of the layer of seawater undersaturated with aragonite increased the frequency and magnitude of coastal acidification associated with upwelling events (Feely et al. 2008, 2010).

Like Monterey Canyon to the north the canyon provides cold, nutrient - rich water to the surface during upwelling events.

Occasionally, upwelling events increase the productivity in these ocean deserts: Oceanic eddies transport deep - water containing high concentrations of nitrate, phosphate and silicate, towards the surface.

Combined with Integrated Ocean Observing System (IOOS) buoys from NOAA measuring wind velocity, they track ocean acidity — and predict the upwelling events that cause increased acidity — in real time.

Climate modeling shows that the trends of warming ocean temperatures, stronger winds and increasingly strong upwelling events are expected to continue in the coming years as carbon dioxide concentrations in the atmosphere increase.

Washington, which produces farmed oysters, clams and mussels, is particularly vulnerable to acidification, for two reasons: seasonal, wind - driven upwelling events bring low - pH waters from the deep ocean towards the shore, and land - based nutrient runoff from farming fuels algal growth, which also lowers pH.

These upwelling events also push nutrients to the surface to help support kelp forests and productive fisheries.

First, the researchers found that a regional upwelling pattern alone couldn't explain the destruction: Core samples taken from fossil corals showed that the reefs had thrived through even more massive upwelling events over the last 7000 years.

Not exact matches

«The geochemical signals were consistent with a period that is very cool and very wet, with very strong upwelling, which is more like a modern day La Niña event in this part of the Pacific.»

The plate failed to split completely, but geologists think that the event left scars below the NMSZ: a buried rift zone, where the rocks are weak and fractured, over plutons — blobs of dense igneous rock — that themselves rose from an upwelling of unusually dense lower crust.

Lowest pH (7.8) and highest pCO2 (658.3 µatm) values measured during a cold - water intrusion event in the non-upwelling season were similar to those minimum values reported from upwelling season (pH = 7.8, pCO2 = 643.5 µatm), unveiling that natural acidification also occurs sporadically in the non-upwelling season.

The field experiment with the KOSMOS mesocosms off Gran Canary now culminates in the simulation of deep - water upwelling — an event that can boost productivity in these nutrient - starving waters.

The island's volcanism is associated with the rifting along the Azores Triple Junction; the spread of the crust along the existing faults and fractures has produced many of the active volcanic and seismic events, [22] while supported by buoyant upwelling in the deeper mantle, some associate with an Azores hotspot.

Thus, it can be speculated that water carried to the surface by upwelling during positive dipole events is becoming colder and results in a colder EEIO during positive events in recent decades.

According to McLean: «The abruptness of this change in upwelling appears likely to be related to some cataclysmic event in the region.

During an ENSO event, the prevailing trade winds weaken, reducing upwelling and altering ocean currents such that the sea surface temperatures warm, further weakening the trade winds.

Because the active region of convective clouds is located relatively in the eastern Pacific sector during El Niño events, it is suggested that the stronger upwelling and the higher tropopause associated with the convective cloud activity bring about less total ozone.»

Because ENSO is not about «sloshing» — but the first cause of upwelling in the eastern Pacific with a series of feedback in wind, cloud and current followed by a relaxation event in the western Pacific — probably triggered by the MJO.

Over the last 5000 years intermittent melting and reforming of sea ice in the Marguerite Bay is consistent with enhanced sensitivity to ENSO forcing and increased upwelling of CDW; a similar sensitivity to ENSO events has been documented over the most recent decades.

The lower δ18O values in the archival shells may reflect the timing of the 1983/84 ENSO event, where surface temperatures warmed when upwelling weakened [16].

The spikes in temperature since 1980 can also be mainly attributable to raised H2O levels from El Nino events and other incalculable ocean temperature oscillations that bring upwelling of ocean heat.