Yes, it’s Friday, and I’m tired too. But lots still going on at #AGU18! Come see @JoyceAnnYager of USC Earth Science talk about ocean silica 200 Myrs ago based on her work on Si isotopes in sponges... poster 1260!

Great to see the exciting paleomonsoon work of Sarah Feakins and Valier Galy from IODP #Exp354 featured in a remarkably wide ranging talk from Christian France-Lanord at #GilbertClub 2018!

No matter how many times I come here it’s hard not to have breath taken away by view of the eastern Andes #cloudforest ⁦at Wayqecha Bio Station in #Peru. I’ll be leading a ⁦USC Dornsife College of Letters, Arts & Sciences⁩ field course across the Amazon for next 3wks. Follow our progress ⁦USC Earth Science⁩

LA friends! I'm excited to be part of "LA Against the Mountains" in the Serpentine Pavilion La Brea Tar Pits tomorrow, Tues. Sept 24th, 6:30pm. Come join us in this amazing space to discuss LA & the natural world w/ @HawthorneCDOLA Alexander Robinson & others secondhome.io/cultural-progr… (free)

Thinking about @goldschmidt2020, Hawaii, June 21-26? Submit a session proposal! Deadline Oct 18 (10 days). Theme 10 is Earth surface processes: chemical fronts to climate change. Would love a session on basalt/volcanic systems inspired by conference venue! goldschmidt.info/2020/

Last chance to submit your work for @goldschmidt2020 in Hawaii — abstracts due this Friday, Feb. 21st! Please consider one of the exciting sessions in Theme 10, Surface Processes: Chemical Fronts to Climate Change. goldschmidt.info/2020/abstracts

An eerily quiet campus on this day of the 2020 #USCGrad. But these unusual times do not tarnish the achievements of our graduates. Wishing all a hearty congratulations and hoping everyone has a chance to come back to visit USC sometime soon!

Last call for faculty applicants to join USC Earth Science to help understand the most pressing global environmental problems! Tenure-track Assist. Prof. position in Global Environmental Change: usccareers.usc.edu/job/los-angele…

Fun evenings this week packing 220 lab kits to send to USC students for #pandemiclife learning about #energy and #carbon. Thanks to USC Earth Science staff and TAs, my ever-generous wife Tracey Nyberg, and USC mailing services for all the help to send these far & wide!

Interested in understanding shocks & building #resilience? For those who think hurricanes, earthquakes, floods, wildfires, pandemics, and more - from all angles - pls join U.S. National Science Foundation Societal Shock Resilience Workshop, June 8-9th & 11th: scec.org/workshops/2021…

Emerging from tweet hibernation to share highlights of USC Earth Science Maymester field class to Alaska. Over next 3 weeks we’ll learn about water, landscapes, & life in changing Arctic - tundra, floodplains & forests, glaciers & mountains all to come. USC Dornsife College of Letters, Arts & Sciences

Fantastic start to our USC Earth Science USC Dornsife College of Letters, Arts & Sciences #Alaska field class at the Army Corps Permafrost Research Tunnel, exploring frozen ground, ancient grasses, ice wedges, and mammoth bones… oh and the pungent smell of permafrost! Huge thanks to USACE HQ CRREL for hosting us!

Amazing ancient ice wedge features come to life in the USACE permafrost tunnel. White ice filled in voids where older brown ice melted. Ice wedges warped surrounding layers as they formed and expanded. Amazing opportunity to be able to take our USC Earth Science class there.

Exciting 2 days w/ USC Earth Science field class on fabled Dalton Hwy. Trucks servicing Alaska’s oil fields make 414-mile gravel road an adventure but also amazing opportunity to reach remote tundra of the North Slope. Pipeline, Arctic Circle, & caribou herds just some highlights.

The Arctic comes alive in Spring & rivers are no exception. Our USC Earth Science field class reached the #Yukon Crossing just after ice breakup. Amazing chance to see mesmerizing ice flows unfold. No flooding in this area but sadly some communities upstream not so fortunate this year.

Had fantastic opportunity to spend 5 days Toolik Field Station Field Station in #Arctic of northern Alaska with USC Earth Science class. Thanks to everyone at this amazing facility for allowing us to explore tundra & learn water chemistry in this rapidly changing environment. It’ll be hard to leave!

Incredible #aufeis on the North Slope of Alaska near Toolik Field Station with USC Earth Science field class. These seasonal accumulations of layered ice form in the Arctic where ground water discharges and successfully freezes, building up then eroding from underneath during Spring thaw. Amazing!

Students on USC Earth Science field class spent their time @toolik designing & implementing water chemistry research projects. Everyone now working up data. Excited to see how stream chemistry changed as the channel at #Imnavait opened up in snow&ice over our few days there! Stay tuned!

And here is it... lots of change @toolik streams during snowmelt. Great opportunity for USC Earth Science field class to explore how water chemistry reflects flow paths. Impressed by what they could do in a few days with measurements we could make in the field!

Thanks to hard days setting out electrode arrays on steep slopes and long, cold, wet, sleepless nights collecting stream water, Abra Atwood and Maddie Hille have revealed how raging streams and rivers after wildfires are more than meets the eye: nature.com/articles/s4146…