Publications
These publications showcase the significant science conducted in our Science Centers.
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Source characterization and tsunami modeling of submarine landslides along the Yucatán Shelf/Campeche Escarpment, southern Gulf of Mexico Source characterization and tsunami modeling of submarine landslides along the Yucatán Shelf/Campeche Escarpment, southern Gulf of Mexico
Submarine landslides occurring along the margins of the Gulf of Mexico (GOM) represent a low-likelihood, but potentially damaging source of tsunamis. New multibeam bathymetry coverage reveals that mass wasting is pervasive along the Yucatán Shelf edge with several large composite landslides possibly removing as much as 70 km3 of the Cenozoic sedimentary section in a single event. Using...
Authors
Jason D. Chaytor, Eric L. Geist, Charles K. Paull, David W Caress, Roberto Gwiazda, Jaime Urrutia Fucugauchi, Mario Rebolledo Vieyra
Methane turnover and environmental change from Holocene biomarker records in a thermokarst lake in Arctic Alaska Methane turnover and environmental change from Holocene biomarker records in a thermokarst lake in Arctic Alaska
Arctic lakes and wetlands contribute a substantial amount of methane to the contemporary atmosphere, yet profound knowledge gaps remain regarding the intensity and climatic control of past methane emissions from this source. In this study, we reconstruct methane turnover and environmental conditions, including estimates of mean annual and summer temperature, from a thermokarst lake (Lake...
Authors
Marcus Elvert, John W. Pohlman, Kevin W. Becker, Benjamin V. Gaglioti, Kai-Uwe Hinrichs, Matthew J. Wooller
Finite-frequency wave propagation through outer rise fault zones and seismic measurements of upper mantle hydration Finite-frequency wave propagation through outer rise fault zones and seismic measurements of upper mantle hydration
Effects of serpentine-filled fault zones on seismic wave propagation in the upper mantle at the outer rise of subduction zones are evaluated using acoustic wave propagation models. Modeled wave speeds depend on azimuth, with slowest speeds in the fault-normal direction. Propagation is fastest along faults, but, for fault widths on the order of the seismic wavelength, apparent wave speeds...
Authors
Nathaniel C. Miller, Daniel Lizarralde
Consistent response of bird populations to climate change on two continents Consistent response of bird populations to climate change on two continents
Global climate change is a major threat to biodiversity. Large-scale analyses have generally focused on the impacts of climate change on the geographic ranges of species and on phenology, the timing of ecological phenomena. We used long-term monitoring of the abundance of breeding birds across Europe and the United States to produce, for both regions, composite population indices for two...
Authors
Philip A. Stephens, Lucy R. Mason, Rhys E. Green, Richard D. Gregory, John R. Sauer, Jamie Alison, Ainars Aunins, Lluis Brotons, Stuart H.M. Butchart, Tommaso Campedelli, Tomasz Chodkiewicz, Przemyslaw Chylarecki, Olivia Crowe, Jaanus Elts, Virginia Escandell, Ruud P.B. Foppen, Henning Heldbjerg, Sergi Herrando, Magne Husby, Frederic Jiguet, Aleksi Lehikoinen, Ake Lindstrom, David G. Noble, Jean-Yves Paquet, Jiri Reif, Thomas Sattler, Tibor Szep, Norbert Teufelbauer, Sven Trautmann, Arco Van Strien, Chris van Turnhout, Petr Vorisek, Stephen G. Willis
Organic-matter retention and macroinvertebrate utilization of seasonally inundated bryophytes in a mid-order Piedmont River Organic-matter retention and macroinvertebrate utilization of seasonally inundated bryophytes in a mid-order Piedmont River
There is increased understanding of the role of bryophytes in supporting invertebrate biomass and for their influence on nutrient cycling and carbon balance in aquatic systems, but the structural and functional role of bryophytes growing in seasonally inundated habitats is substantially less studied. We conducted a study on the Middle Oconee River, near Athens, GA, to assess invertebrate...
Authors
James Wood, Meryom Pattillo, Mary Freeman
Detecting failure of climate predictions Detecting failure of climate predictions
The practical consequences of climate change challenge society to formulate responses that are more suited to achieving long-term objectives, even if those responses have to be made in the face of uncertainty1, 2. Such a decision-analytic focus uses the products of climate science as probabilistic predictions about the effects of management policies3. Here we present methods to detect...
Authors
Michael C. Runge, Julienne C. Stroeve, Andrew P. Barrett, Eve McDonald-Madden
Experience drives innovation of new migration patterns of whooping cranes in response to global change Experience drives innovation of new migration patterns of whooping cranes in response to global change
Anthropogenic changes in climate and land use are driving changes in migration patterns of birds worldwide. Spatial changes in migration have been related to long-term temperature trends, but the intrinsic mechanisms by which migratory species adapt to environmental change remain largely unexplored. We show that, for a long-lived social species, older birds with more experience are...
Authors
Claire S. Teitelbaum, Sarah J. Converse, William F. Fagan, Katrin Böhning-Gaese, Robert B. O’Hara, Anne E Lacy, Thomas Mueller
Estimating indices of range shifts in birds using dynamic models when detection is imperfect Estimating indices of range shifts in birds using dynamic models when detection is imperfect
There is intense interest in basic and applied ecology about the effect of global change on current and future species distributions. Projections based on widely used static modeling methods implicitly assume that species are in equilibrium with the environment and that detection during surveys is perfect. We used multiseason correlated detection occupancy models, which avoid these...
Authors
Matthew J. Clement, James E. Hines, James D. Nichols, Keith L. Pardieck, David J. Ziolkowski
Technical Note: Harmonizing met-ocean model data via standard web services within small research groups Technical Note: Harmonizing met-ocean model data via standard web services within small research groups
Work over the last decade has resulted in standardised web services and tools that can significantly improve the efficiency and effectiveness of working with meteorological and ocean model data. While many operational modelling centres have enabled query and access to data via common web services, most small research groups have not. The penetration of this approach into the research...
Authors
Richard P. Signell, E. Camossi
Submarine landslides in Arctic sedimentation: Canada Basin Submarine landslides in Arctic sedimentation: Canada Basin
Canada Basin of the Arctic Ocean is the least studied ocean basin in the World. Marine seismic field programs were conducted over the past 6 years using Canadian and American icebreakers. These expeditions acquired more than 14,000 line-km of multibeam bathymetric and multi-channel seismic reflection data over abyssal plain, continental rise and slope regions of Canada Basin; areas where...
Authors
David C. Mosher, John Shimeld, Deborah R. Hutchinson, N Lebedova-Ivanova, C. Chapman
Metformin and other pharmaceuticals widespread in wadeable streams of the southeastern United States Metformin and other pharmaceuticals widespread in wadeable streams of the southeastern United States
Pharmaceutical contaminants are growing aquatic-health concerns and largely attributed to wastewater treatment facility (WWTF) discharges. Five biweekly water samples from 59 small Piedmont (United States) streams were analyzed for 108 pharmaceuticals and degradates using high-performance liquid chromatography and tandem mass spectrometry. The antidiabetic metformin was detected in 89%...
Authors
Paul M. Bradley, Celeste A. Journey, Daniel T. Button, Daren M. Carlisle, Jimmy M. Clark, Barbara Mahler, Naomi Nakagaki, Sharon L. Qi, Ian R. Waite, Peter C. Van Metre
Shallow geology, sea-floor texture, and physiographic zones of Vineyard and western Nantucket Sounds, Massachusetts Shallow geology, sea-floor texture, and physiographic zones of Vineyard and western Nantucket Sounds, Massachusetts
Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Vineyard and western Nantucket Sounds, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs/video, and surficial sediment samples collected within the 494-square-kilometer study area
Authors
Wayne E. Baldwin, David S. Foster, Elizabeth A. Pendleton, Walter A. Barnhardt, William C. Schwab, Brian D. Andrews, Seth D. Ackerman