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CLAST2019 attendees at the Mendenhall Glacier
as part of the mid-week field trip. Back row (left to
right): Sergio Andò, Niels Hovius, Karl Lang, Kelly
Thomson, Mathieu Cartigny, Justin Lawrence,
Daniella Rempe, Ian Delaney, Eva Enkelmann,
Jane Willenbring, Ken Ferrier; Middle-back row
(left to right): Pedro Val, Alexis Licht, Jan Blöthe,
Glenn Sharman, Anna Clinger, Al Neely, Christian
France-Lanord, Kristen Cook, Jessica Raff, Mitch
D’Arcy, Hon-chim Chiu; Front-back row (left to
right): Yani Najman, Xiaoni Hu, Claire Mastellar,
Julia Carr, Kathleen Marsaglia, Nick Brilli,
Anthony Maue, Eran Hood, Cathy Connor,
Marguerite Toscano, Michal Ben-Israel, Duna
Roda-Boluda, Steffi Tofelde; Front row (left to
right): Tara Jonell, Donovan Dennis, Brian Yanites,
Kalli Dubois, Yuting Li, Peter Clift, Adam Forte,
Luca Malatesta, Veronica Prush, Sonia Nagorski,
Nicole Gasparini, Udita Murkherjee. Photo credit:
Tongass National Forest park ranger at Menden-
hall Glacier.

Following on the key area above, the community highlighted the Sedimentary Geology and Paleobiology Program, the Tectonics
necessity for the development of possible, plausible, and probable Program, and the Paleoperspectives on Climate Change Program.
models that can be appropriately upscaled from numerical and Supplementary sponsorship was provided by the International
analog frameworks to test at the field scale. This includes develop- Association of Sedimentologists and the British Sedimentology
ing coupled chemical and physical models that can be better Research Group of the Geological Society of London. We thank pro-
applied when translating chemical fluxes (i.e., nutrients, carbon) gram directors Justin Lawrence and Marguerite Toscano at the con-
along with records of physical erosion. ference for NSF representation and input, and we sincerely thank
GSA meeting manager Becky Sundeen for organizational and admin-
Landscape Connectivity (Buffers, Barriers, and Blankets) istrative support. Considerable logistical support was provided by the
The impact of landscape connectivity on source-to-sink dynamics University of Alaska Juneau and Forest Service staff of the Tongass
has been an incredibly popular topic across geoscience fields for the National Forest.
past two decades and so consequently pervaded many discussions at
the conference. Significant improvements have been made in under- Abstracts of presentations are available at www.geosociety .org/
standing the role of signal shredding as a result of poorly connected penrose (click the “archive” tab).
landscapes, in how this process often biases sedimentary records,
and over which spatiotemporal scales this process may inhibit accu- FIELD TRIPS AND GUIDES
rate interpretation. Yet there are still issues in translating nonlinear An informal field-trip guide for the two field trips was compiled
behavior from erosional records, especially when non-unique by the meeting conveners using text and figures compiled by UAS
responses are observed in both source and sink signals. Instead of field trip leaders: Cathy Connor, Eran Hood, and Sonia Nagorski.
viewing sedimentary systems as separate hillslope or fluvial sys- This field trip guide is freely available at www.geosociety.org/
tems, a nested perspective has proven useful for understanding land- penrose (click the “archive” tab).
scape response and in identifying directionality of critical threshold
behaviors. Recent work with community models has yielded interest- Participants
ing results and may continue to offer time- and energy-efficient ways Sergio Andò, Michal Ben-Israel, Jan Blöthe, Nicola “Nick”
in which to test hypotheses underpinned by empirical evidence from Brilli, Julia Carr, Matthieu Cartigny, Peter Clift, Anna Clinger,
the field. Lastly, we recognized that necessary improvements are Cathy Connor, Kristen Cook, Mitch D’Arcy, Ian Delaney,
needed to identity the impact landscape legacy effects and how best Donovan Dennis, Roman DiBiase, Kalli Dubois, Eva Enkelmann,
to quantify “landscape memory” processes and rates. Ken Ferrier, Adam Forte, Christian France-Lanord, Nicole
Gasparini, Eran Hood, Niels Hovius, Xiaoni Hu, Tara Jonell, Karl
ACKNOWLEDGMENTS Lang, Justin Lawrence, Yuting Li, Alexis Licht, Luca Malatesta,
Financial support from joint sponsors enabled the high-level par- Kathleen Marsaglia, Claire Mastellar, Anthony Maue, Udita
ticipation of 15 young scientists, international scientists, and the sup- Mukherjee, Sonia Nagorski, Yani Najman, Alexander Neely,
port of three women keynote scientists. Joint sponsorship was pro- Veronica Prush, Jessica Raff, Daniella Rempe, Duna Roda-
vided by The Geological Society of America Foundation and several Boluda, Glenn Sharman, Kelly Thomson, Stephanie Tofelde,
programs within the National Science Foundation (NSF): the Geo- Marguerite Toscano, Pedro Val, Jane Willenbring, Brian Yanites,
morphology and Land-Use Dynamics Program, EPSCoR Program, Xiaoping Yuan, Peng Zhou.
www.geosociety.org/gsatoday 39