The causes of global climate change
By: Dr. Dinusha Dharmaratna
What is climate change? There are several periods identified by climatologists of changes in earth’s climate over extensive time period – oscillation between broadly cold and warmer weather (glacial and interglacial periods). What we want to know is whether this current period of warming...
By: D. Vogt
The fundamental difference between aquatic and marine life is that aquatic life occurs in any body of water, whereas marine life specifically lives in saltwater environments. Marine organisms often have special adaptations that allow them to thrive in this particular type of aquatic environment. Aquatic...
By: Caroline St Clare
Sleet doesn't have many redeeming qualities. Without the excitement of a hailstorm, the wondrous beauty of a snowfall or the welcome relief of a rain shower during a drought, sleet is more of an inconvenience than anything else. The only time you're likely to be...
By: B. J. Deming
Earthquakes can be terribly destructive, but as with all seismic events, they also reveal things to us that otherwise would be deeply hidden, like natural resources or even the secret testing of a nuclear bomb. This is why many people, not just geologists, need to...
An overview of ocean biogenic sediments
By: Judith Willson
The sediments in the ocean, which sometimes later become rocks, come from two main sources. Terrigenous sediments originate from weathering on land and biogenic sediments consist predominately of the skeletons of tiny marine organisms. Biogenic sediments can provide answers about the ecology, climate and chemistry...
Life near an active volcano
By: Christyl Rivers
Living on an active volcano is about as serene as anyone could imagine. That is because, Hualalai, the volcano upon which I sit as I type, has been relatively quiet for decades. However, on the other side of our island of Hawaii, Kilauea is not...
By: D. Vogt
In September 2010, a Richter 7.1. earthquake ripped through Christchurch, New Zealand, causing considerable building damage but fortunately only injuring two people. Earthquakes aren't news in New Zealand - in fact, the country's strong building codes probably saved many lives in this incident alone...
What are ocean long waves
By: Judith Willson
Ocean long waves are disturbances caused by the wind that travel an extremely long way and have a profound effect on ocean circulation. These can be barotropic waves, which propagate along the surface, and baroclinic waves, which move long a sharp density gradient. Two of...
An introduction to the ecology of estuaries
By: Judith Willson
Estuaries have unique ecosystems combining aspects of the sea and of rivers. Life has adapted to environments that change with the tides and with changing amounts of rain in the rivers. They are valuable for their own sake, their role in protecting the coast, and...
Explaining earthquakes
By: Ivan Setiawan
How to Survive in Earthquake-Potential Area When an earthquake occurs, there are plenty of people are killed in vain. Earthquake, especially its vibration, however, is not lethal. The victims of earthquake mostly killed because of being befallen by the collapse of buildings, roofs, trees, etc...

 

1 357 358 359 360 361 533