Archive for June 8th, 2011

G’day from down under!!!

Wednesday, June 8th, 2011

We're finally in AUSTRALIA!!! We arrived last Wednesday, so we've been here a full week now, and have a good amount of stuff to share with you! It's been pretty rough getting on the 12-hour-difference time schedule, but we'm getting there!

First of all, it is absolutely BEAUTIFUL here. The plant-life and wildlife are exotic and the beaches are breathtaking. The sky is literally bluer here (less particulate matter in the air) and the clouds alone are incredible. They're so high in the sky and vast; it really gives the true impression of how huge Australia really is.

We've both now been in our third ocean! 3 down (Atlantic, Pacific, and Indian) and 2 to go (Arctic and Southern)!!!

Anyway, we're in Perth, which has a population over over 1.5 million people. That being said, it is commonly known as the world's most isolated city...which it is! The nearest cities are thousands of miles away. Perhaps arising from being the most isolated big city in the world, the food is super expensive here! Many times 2- or 3-times as expensive as in the US! We certainly didn't quite expect that! North of Perth, about half way up the continent of Australia is Ningaloo Reef; the world's only extensive reef system of the west coast of any continent. We may even get a chance to visit Ningaloo Reef for a glider deployment! On the east coast of AU is Cairns (the Great Barrier Reef) (which we will be visiting for a week at the end our our trip!), the Gold Coast, Sydney, etc. Those are the more commonly known and visited tourist attractions.

So over the past week we've been lucky enough to go to the beach a few times, visit the city, and do some walking around in Kings Parks, which is a part-preserved forest/part-botany forest. Really pretty there.

Some of the birds here really are quite fascinating. Beautiful colors and really cool sounds and songs! The Kookaburra sounds really cool in particular. Its sound is actually replicated by Aboriginals that play the didgeridoo.

The first couple days we got here the surf was great! But the swell has passed and I'm (Dave) waiting for another good swell to come in since I brought my surfboard! Also had some wetsuit problems, but hopefully they'll get resolved soon and I can get some really nice waves! One of the professors we're working with at the University of Western Australia worked on a project to create the world's first artificial SURFING reef! The reef was designed to create perfectly breaking waves for surfers, and is just a few miles away from where we're staying!

 


This past Monday we started work at the University of Western Australia's (UWA) Oceans Institute (OI). We are working with Ben, Christine, Dennis, Mun, and Chari, who are all from UWA. We started off on Monday morning with an ANFOG (Australia's National Facilities for Ocean Gliders) meeting about the plans for this week and the next coming 2 months. We have a glider deployment this Friday, for which we have been preparing and testing the glider U209 for. The glider will be taking measurements of the Leeuwin Current just off the coast of Perth. The Leeuwin Current is vital to the marine biology and ecosystems here in Western Australian waters. In addition to prepping U209, we prepped U210 for another Marine Science Institution in Tasmania for a very cool guy named Lindsay who I met in the Canary Islands this past March for a global glider observatories conference!


After we get U209 in the water, we will begin prepping the 2 gliders which we will be piloting for our primary research this summer. They are a new type of glider which we have not worked with yet, which is exciting to be able to learn how to tech and operate another type of glider (there are 3 main types of gliders, so we'll know how to operate 2 out of 3 after this summer!). The type of gliders we are very familiar with are Teledyne Webb Research Slocum Gliders, such as U209 and U210 are, as well as the Rutgers University gliders such as RU27. We will be working plenty with Slocums, but the main part of the data from which we will be using for our research will come from sensors aboard the 2nd type of glider: iRobot Seaglider. Essentially, the sensors on any glider are the same, the variance is just in the glider itself; the vehicle to which the sensors are attached. When it comes down to it, data is data!

We will be researching the Perth Canyon, an ancient part of the Swan River and begins about 20 nautical miles off the coast of Perth. I'll get into more detail about that when the times comes, but its geoformation is similar to the Hudson Canyon off the coast of NJ!

So as we said, we'll be going out of a boat early Friday morning to deploy the Slocum glider U209! We will be with Dennis, the glider tech at UWA. We'll be sure to take some pictures!

Speaking of pictures, photography and is a mini-hobby of ours, so we'll be sharing some photos we take along the way of this Australian Adventure! I (Dave) particularly like dynamic landscape photography and supermacro photography. Hope you enjoy them!

Cheers,
Dave & Shannon 🙂







 

 

Giving up our summer for winter?!?!

Wednesday, June 8th, 2011

Luckily the winter we will be experience will be in AUSTRALIA! So the weather should still be quite comfortable! We'll specifically be in Perth, Western Australia (see image below) for most of the journey for a period of 2 months. We will be working/interning/performing an independent research project at the University of Western Australia, from which we will be producing, amongst other things, a published paper!

Dave Kaminsky and Shannon Harrison here, by the way. We know some of you following along may not quite know exactly what we're doing down here, so let us fill you in a bit. Those of you who are more familiar with it may be able to skip a paragraph or two!

We've had some incredible opportunities and experiences here at Rutgers as an undergraduate, particularly with underwater robotics. The kinds of underwater robots we work with are probably nothing like most of you have seen on TV, such as Alvin or Jason that explored the Titanic. That's just because the robots I work with are some of the newest underwater robotic technologies; literally the robots of the future!

We work in the Coastal Ocean Observation Lab (COOL) in the Institute of Marine and Coastal Sciences (IMCS), as well as the Glider Lab in IMCS (Oceanographers love acronyms and abbreviations!). We have worked with a few different technologies, including satellite imagery and coastal radar, but primarily underwater robots called gliders (pictured below!).
Gliders are a type of Autonomous Underwater Vehicle (AUV) that carry suites of science sensors to measure different aspects of the ocean (or bodies freshwater, too!). Gliders are designed to be controlled via satellite to able to stay out in the ocean for long periods of time and to travel long distances. This is achieved by maximizing battery power by not using any kind of energetic means of forward propulsion...such as a propellor or water jet. Instead, gliders have a piston at the front of the vehicle called a buoyancy pump. This pump can draw in or push out about 1 cup's worth of seawater. When the pump draws in water, it makes the nose of the glider "heavier" (more dense/negatively buoyant) than the surrounding seawater, and the nose of the glider pitches down. Since the glider has wings and is hydrodynamically designed, the robot glides (hence the name "glider"!) down AND forward, rather than just sinking straight down. When the glider gets to the desired depth, the pump pushes out the water, making the nose of the glider "lighter" (less dense/positively buoyant) than the surrounding seawater, and the robot glides up and forward towards the surface. The glider repeats that pattern over and over, making a sawtooth-like pattern vertically (see below! the dive angles are exaggerated in the picture...a normal glide angle is only about 26 degrees) in the water to create forward motion without using much battery power at all.
Current models can stay out in the ocean for up to about a year as of now, and newer models in development now are projected to be able to stay out in the ocean for up to 5 years (!!!) without human contact. The science sensors on the glider can collect all different kinds of data, such as temperature, salinity (salt content), depth, density, dissolved oxygen, phytoplankton health and abundance, nitrate, dissolved organic matter, microturbulence, ocean current speed and direction, etc. After all, the mechanisms and physics of the way these gliders work are truly incredible, but when it comes down to it, gliders are nothing but vehicles to carry sensors for a science mission!
So there you have it! That's what we'll be working with here down under!
This summer will be an amazing extension of the experiences we've had working with gliders here at Rutgers. We will be working at the School of Environmental Systems Engineering (SESE) and the Australian National Facility for Ocean Gliders (ANFOG) at the University of Western Australia (UWA). ANFOG is part of Australia's Integrated Marine Observing System (IMOS). See...we weren't kidding about the acronym/abbreviation thing!!! Anyway, We will be studying the Leeuwin Current System, which is vital to both the climate, biology, and ecosystems particularly off the coast of Western Australia. We will also be working with the UWA/ANFOG staff to fly their first fleet of gliders (two or more gliders flying a similar pattern within close proximity of each other). Flying gliders as fleets, rather than individually, has the advantages of having multi-point samples for averaging and better resolving anomalies in the data, sensor calibrations, etc.
We're SUPER excited for this summer!!! This is our ideal internship/research opportunity for my last summer before we graduate next year and move on to grad school. What's extra special about this internship is that the program didn't already exist - this is totally new to the University of Western Australia. We were able to raise all the funding for this experience. We worked tirelessly for a long time and through many moments of grim-looking horizons for this...but luckily our hard work has paid off in a way we can't even begin to truly express our gratitude for. We would like to very sincerely thank the faculty and staff at the University of Western Australia/ANFOG, the faculty and staff at the Institute of Marine and Coastal Sciences, the staff at Teledyne Webb Research, and the Rutgers SEBS International Program, among others who made this possible. Thank you SO much.
While we're in Australia, we plan on experiencing as much as possible in our off-time, including surfing, scuba diving, hiking, etc! We'll be sure to post pictures and videos of all our adventures, both in and out of the internship. Please feel free to comment on any of our blog posts, we encourage it! Thanks for reading everyone! Looking forward to keeping you updated!
Cheers,
Dave & Shannon 🙂