Exp390/393 – Time Scavengers

Tessa Peixoto, Scientist at heart and Educator in the world

July 11, 2022June 30, 2022AdrianeLeave a comment

Time Scavengers is collaborating with the International Ocean Discovery Program Expedition 390/393 to showcase the scientists recovering sediment and rock cores, and conducting science at sea! Click here to learn more about IODP, and visit the Research Vessel JOIDES Resolution website here to read more about the drillship. To learn more about IODP Expeditions 390 and 393, click here!

You can follow the JOIDES Resolution on Twitter @TheJR, on Facebook @joidesresolution, and on Instagram @joides_resolution!

Tell us a little bit about yourself.
My name is Tessa Peixoto and when I was younger I was referred to as shark girl. I was super obsessed with sharks, which is what got me into science. Outside of science though I am a fan of doing art, specifically painting and building things, and I like baking for friends and family. Movies are a go to past time for me, and I am one of those people that really like b-rated sci fi movies. For instance, Tremors, highly suggest watching it. I am a science enthusiast so when I go out for walks on the beach, hikes in nature, or anywhere else I am still observing what kind of life I see. It is a way of connecting with the planet for me. However, my friends just give me a pat on the head when I yell excitedly about finding Codium fragile on the beach. One time, I found a carcass of a skate on a beach and I ran to anyone who saw me holding it so I could show them.

What do you do?
So I studied marine biology as an undergraduate student. During my studies and soon after I was able to conduct or participate in research on intertidal blue mussels, describing freshwater stingrays, and describing the morphology and function of the armor for a family of fish called Poachers. Soon after I was able to be a seasonal aide for the California Department of Fish and Wildlife and got exposed to doing trawling surveys in river tributaries.

After graduating and my bopping around the US for a variety of temporary science positions, I found myself working as a museum educator. It was the funnest thing to be around so many specimens for every kind of field of natural sciences. Plus, I was able to use a lot of those specimens as part of my teaching practice during classes that field trips could sign up for. Unfortunately, as the position was part time, life demanded I find a position that could provide me benefits that would support me more efficiently. I now work as a science instructor for an Adult Education program in Boston, MA. It is truly a rewarding position because as I get to share my love and fascination of science with my students, I know I am helping them get closer to obtaining a high school diploma, which only improves their job prospects.

What is your favorite part about being a scientist, and how did you get interested in science?
When I was younger, I remember my brother was always doing something with his hands. I remember always seeing him carve up soap bars and for some reason I understood it to be science, or rather an experiment. I also was really into ocean documentaries, anything on Discovery Channel that highlighted the ocean or environment would be something I would pay attention to. And yes my attention was even more peaked if sharks were in it. At one point during our youth my brother told me that if I wanted to keep learning about sharks that I would have to be someone who studies marine biology. And thus began my stubborn journey in declaring I will become a marine biologist.

Fast forward to college, I entered Northeastern University to study marine science, as I had stated repeatedly since I was younger. Interestingly enough, the more science classes I took the more I realized I just liked science, all of it. It took a bit of time for my fisheries teacher to get me to let go of my stubborn obsession with sharks, but I would say once I did, my understanding of marine biology as a whole was improved. Bachelors of science is where my formal education ends, therefore I have not yet become a marine biologist. Nevertheless, my enthusiasm for science has not dwindled away. It is still very present and of course with a slight favoring of anything ocean.

I have enjoyed the opportunities I had in college and since college because I kept getting to learn from the people around me. Especially, in the two science conferences I participated in. I love being able to see other people’s posters and discuss with them their thoughts and their research.

How does your work contribute to the betterment of society?
As much as I did not for-see myself as being an educator, I am happy I am in it. Mainly for the reason that I can finally share science with adults that avoid science because they had horrible experiences from their last time in education or didn’t really get a chance to do formal education in their youth. So when I teach I aim to be open and caring of their learning journey, and to never dismiss their questions. It benefits society as they become great learners and more confident in their skills. Being an adult educator is very important because it can help disseminate science in a way that helps the world presently. Essentially, I work with individuals that have the current and immediate ability to be stewards of the planet as their understanding of the world improves. As much as education of children is very much needed, I want to improve the science literacy of the adult population. A future goal of mine is to help increase options that are free, supportive, and open to questions that adults have about science, and the inner workings of the planet.

What advice do you have for up and coming scientists and educators?
Something I want everyone to know is to not judge yourself on your performance in classes. Just because you might have gotten a lower grade in a science class does not mean you would be a bad scientist. I also want to say the science or career you might think you want to do might be a completely different field of science or career by the time you graduate, finish a PhD or look for private corporation positions. If you are reading this as someone in high school or college, try out different internships. I know when I was younger I would only look for internships with sharks, and that stubbornness sometimes prevented me from just learning about different fields. Therefore be open to options that come your way. If you are reading this as someone that is mid career, I would say to talk to people in the field that you are interested in. Find others interested in a similar field and hang out with them. For example, there are many groups of mycology fans that meet up every now and then to go foraging and talk mycology. Science in its purest form is about curiosity and asking questions, so keep asking questions and explore our wonderful world.

What is something exciting you are doing at the moment?
I currently am the outreach officer for the JOIDES Resolution that falls under the International Ocean Discovery Program (IODP). This position provides a great view into the world of science communication that is different from the that of the communication done in a formal education position. The outreach officer has the chance to reach out to anyone in the world and share the life of living on the ship and doing research on the ship. This is just a temporary position for the summer, but offer the chance to learn about geosciences, and other ways to explore the Earth. If you are reading this know that you can call into the ship during an expedition and get a tour of your own, it might not be with me but it will be an outreach officer that has the same excitement as I do. (https://joidesresolution.org/about-the-jr/live-video-events-with-the-joides-resolution/)

Gail Christeson, Marine Geophysicist

July 4, 2022May 31, 2022AdrianeLeave a comment

You can follow the JOIDES Resolution on Twitter @TheJR, on Facebook @joidesresolution, and on Instagram @joides_resolution!

I am a marine geophysicist that studies crustal structure. I use techniques that allow us to image the subsurface to study topics such as how ocean crust is formed or what an impact crater looks like in three dimensions. My favorite instruments are ocean bottom seismometers – we drop these off the side of a ship and they record sound waves that travel through the earth. Later we send a signal to each instrument and it lifts off the seafloor for recovery.

I was part of a team that acquired site survey data in the South Atlantic for IODP expeditions 390 and 393. These data allowed us to choose the best sites to recover both sediments and basement rocks. It is very exciting to see the drill cores from the sites we picked! The cores provide the ground-truth that allows us to better interpret our geophysical data over the South Atlantic region.

Image of a woman in slacks and a green shirt standing between rows of ocean equipment- bright yellow seisomemters with red flags sticking out of the top. — Gail with her favorite instruments – ocean bottom seismometers.

A previous project I was involved in was studying the Chicxulub impact crater which formed 66 million years ago when a meteorite struck at the Yucatan Peninsula in Mexico; effects from the impact led to the extinction of the dinosaurs. When I first started out as a research scientist I was part of a team that acquired geophysical data over the Chicxulub structure and confirmed that it was an impact crater. More recently I was in the scientific party that drilled into the structure and recovered rocks from the impact crater!

Growing up I was always interested in science but didn’t know much about earth science. In high school I received information about applying for a scholarship to study geophysics – which I learned was studying the physics of the earth. Once I took my first geophysics course and discovered plate tectonics I was hooked! After graduate school I became a research scientist at the University of Texas Institute for Geophysics (UTIG) where I worked for almost 28 years. I recently took a position as a Program Director at the National Science Foundation in the marine geology and geophysics program. I now get to manage the review process for proposals to conduct cool science all over the world’s oceans!

My biggest hobby is soccer. I love going to see Austin’s new soccer team Austin FC, and my favorite way to spend a Saturday morning is to grab a breakfast taco and watch Premier League soccer matches. I also enjoy reading science fiction and fantasy and watching movies.

Gail is currently a Program Director at the National Science Foundation in the Division of Ocean Sciences; she is also a Research Affiliate at the University of Texas Institute for Geophysics. You can follow Gail on Twitter @glchristeson.

Jeffrey G. Ryan, Petrologist/Geochemist (“Hard rock” geologist)

June 27, 2022June 27, 2022AdrianeLeave a comment

You can follow the JOIDES Resolution on Twitter @TheJR, on Facebook @joidesresolution, and on Instagram @joides_resolution!

I’m Jeff Ryan, a Professor of Geology in the University of South Florida’s School of Geoscience. On IODP Expedition 393, I’ll be sailing as an Inorganic Geochemist. It’s my third IODP research drilling cruise, all sailing this role.

Dr. Jeff Ryan on the JOIDES Resolution during Expedition 366, which drilled rocks and sediments from the northwest Pacific Ocean.

In terms of geology subspecialty I’m a “hard-rock” geologist, as I mostly work on igneous and metamorphic rocks. My research primarily focuses on subduction zones, where Earth’s tectonic plates head down deep-sea trenches and cycle back deep into the Earth’s mantle. I study subduction chemically, using key trace elements and isotopic ratios to understand how the old, cold, wet ocean crust reaching deep sea trenches changes as it subducts, and how fluids and melts driven off subducting plates change nearby mantle rocks and lead to volcanism at island arcs, and even at oceanic hotspots like Hawaii or Iceland. My interest in Expeditions 390-393, which will drill sites in the south Atlantic, nowhere near a subduction zone (!!), is to better understand how the composition of ocean crust changes as it ages, and so what the differences are between the young seafloor subducting beneath the Cascades, and the very old crust going down beneath the Lesser Antilles, or the Mariana Islands in the Pacific.

In my courses at USF I use the ocean drilling research I’m doing directly in teaching our Geology students. My Junior-level Mineralogy/Petrology course has for the past six years examined unusual volcanic rocks from the Izu-Bonin subduction zone that I helped recover as a Shipboard Scientist on IODP Expedition 352. The students made some very cool discoveries about the minerals and textures in those samples, which led to a recent student-authored scientific paper in the journal American Mineralogist (Scholpp et al 2022). I hope to do something similar for my future students with Expedition 390-393 basaltic samples.

People come to geology a bunch of different ways, I’ve found. In my case it was a childhood interest in rocks and minerals, combined with a penchant for creative writing. Geology is at its core a storytelling science: we divine and tell the “stories” behind the places in the Earth that we examine. When I encountered the science fully for the first time, as a Freshman in my first undergraduate college course at Western Carolina University, it was a perfect fit. I’m looking forward to helping tell the story of how the south Atlantic Ocean crust formed and evolved as part of IODP Expedition 393.