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26 August 2016
Hello from Sikuliaq 2016: The Dynamic Arctic
Welcome to our Dynamic Arctic blog! This will be our information hub to keep you up-to-date as we embark on a research cruise through the Beaufort and Chukchi Seas. Our journey will begin in Nome, Alaska on about August 31 and finish around October 1, 2016.
19 August 2016
Pacific sea level predicts global temperature changes
The amount of sea level rise in the Pacific Ocean can be used to estimate future global surface temperatures, according to a new study.
6 July 2016
‘The Blob’ overshadows El Niño
Research identifies earlier ocean warming as dominant effect off West Coast.
24 June 2016
Big Becomes Great
There is some debate on what makes a river great. Is it its length? Its width? Ajit always thought it was more a matter of water volume, but after years of observing river plumes, he now opts for permanence. A river is great when its discharge has a detectable impact on the ocean; when its plume remains unmixed or fairly stable for a considerable period of time, without losing its idiosyncrasy.
23 June 2016
The Thrill of Predictability
There are those who argue that predictability is the greatest gift of progress, the biggest merit of civilization. Our ability to explain nature through science makes the world and the universe predictable and understandable. That enables us to have a more informed and productive relationship with our natural environment and its resources.
22 June 2016
It is what it is – searching for symbiosis
Andreas Novotny thought he would find Hemiaulus here. He has not. “It is what it is, which is fine,” he says. “What we need to do is figure out why.” Andreas is a PhD. student and his research focuses in the symbiotic relationship between a kind of plankton, a Diatom called Rhizosolenia, and a Nitrogen-fixing Cyanobacteria, called Richelia.
20 June 2016
Observing bubbles from underwater gas seeps (video)
Natural oil and gas seeps exist on the ocean floor all over the world. Although humans have known about and exploited these natural resources for thousands of years, scientists know little about how oil and gas droplets disperse in deep water and how they affect underwater ecosystems.
16 June 2016
The Expected Unexpected
The challenge is that the scientists have had great difficulty finding evidence that we are indeed on the plume. Amicable discussions often take place in R/V Falkor’s Dry Lab or the Library. Joseph might think that the satellite images give evidence a certain location is within the reaches of the plume, but oceanographer Annalisa Bracco might reply the data could also be related to coastal upwelling, and not the plume itself.
15 June 2016
5 Reflections Beyond World Oceans Day
June 8 was World Oceans Day, but onboard every day is ocean’s day: non-stop work to better our understanding of 70 percent of our planet. We asked some of our crew and scientists to share thoughts we could consider beyond one calendar date.
14 June 2016
Unidentified Strange Object
Not only has Rhizosolenia turned out in the water samples collected in the latest CTD cast, but it has company: the cyanobacteria Richelia. The exciting aspect is they are together, coexisting in a intracellular symbiotic relationship.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.