Recent Publications - February-March 2019
By Coastal and Marine Hazards and Resources Program
March 29, 2019
List of recent USGS publications and data releases based on coastal and marine research.
Related
Filter Total Items: 20
Organic geochemical investigation of far‐field tsunami deposits of the Kahana Valley, O'ahu, Hawai'i Organic geochemical investigation of far‐field tsunami deposits of the Kahana Valley, O'ahu, Hawai'i
Far‐field tsunami deposits observed in the Kahana Valley, O'ahu, Hawai'i (USA), were investigated for their organic‐geochemical content. During short high‐energy events, (tsunamis and storms) organic and chemical components are transported with sediment from marine to terrestrial areas. This study investigates the use of anthropogenic based organic geochemical compounds (such as...
Authors
Piero Bellanova, Mike Frenken, Bruce M. Richmond, Jan Schwarzbauer, SeanPaul La Selle, Frances Griswold, Bruce E. Jaffe, Alan R. Nelson, Klaus Reicherter
Physical mechanisms influencing localized patterns of temperature variability and coral bleaching within a system of reef atolls Physical mechanisms influencing localized patterns of temperature variability and coral bleaching within a system of reef atolls
Interactions between oceanic and atmospheric processes within coral reefs can significantly alter local-scale ( 60%) over most of this system; however, the bleaching patterns were not uniform. Little is known about the processes governing thermodynamic variability within atolls, particularly those that are dominated by large amplitude tides. Here, we identify three mechanisms at Scott...
Authors
Rebecca H. Green, Ryan J. Lowe, Mark L. Buckley, Taryn M. Lopez, James Gilmour
Marshes are the new beaches: Integrating sediment transport into restoration planning Marshes are the new beaches: Integrating sediment transport into restoration planning
Recent coastal storms and associated recovery efforts have led to increased investment in nature-based coastal protection, including restoration of salt marshes and construction of living shorelines. In particular, many of these efforts focus on increasing vertical elevation through sediment nourishment, where sediment is removed from the tidal channel and placed on the marsh plain, or...
Authors
Neil K. Ganju
Azimuthal seismic anisotropy of 70 Ma Pacific‐plate upper mantle Azimuthal seismic anisotropy of 70 Ma Pacific‐plate upper mantle
Plate formation and evolution processes are predicted to generate upper mantle seismic anisotropy and negative vertical velocity gradients in oceanic lithosphere. However, predictions for upper mantle seismic velocity structure do not fully agree with the results of seismic experiments. The strength of anisotropy observed in the upper mantle varies widely. Further, many refraction...
Authors
H. F. Mark, D. Lizarralde, J. A. Collins, Nathaniel C. Miller, G. Hirth, J. B. Gaherty, R. L. Evans
Considerations for Globigerinoides ruber (white and pink) paleoceanography: Comprehensive insights from a long‐running sediment trap Considerations for Globigerinoides ruber (white and pink) paleoceanography: Comprehensive insights from a long‐running sediment trap
We present a detailed analysis of the seasonal distribution, size, morphological variability and geochemistry of co‐occurring pink and white chromotypes of Globigerinoides ruberfrom a high‐resolution (1–2 weeks) and long‐running sediment trap time series in the northern Gulf of Mexico. We find no difference in the seasonal flux of the two chromotypes. Although flux of G. ruber is...
Authors
Julie N. Richey, Kaustubh Thirumalai, Deborah Khider, Caitlin E. Reynolds, Judson W. Partin, Terrence M. Quinn
Climate change, coral loss, and the curious case of the parrotfish paradigm: Why don't marine protected areas improve reef resilience? Climate change, coral loss, and the curious case of the parrotfish paradigm: Why don't marine protected areas improve reef resilience?
Scientists have advocated for local interventions, such as creating marine protected areas and implementing fishery restrictions, as ways to mitigate local stressors to limit the effects of climate change on reef-building corals. However, in a literature review, we find little empirical support for the notion of managed resilience. We outline some reasons for why marine protected areas...
Authors
John F. Bruno, Isabelle M. Cote, Lauren Toth
Seismic velocity structure across the 2013 Craig, Alaska rupture from aftershock tomography: Implications for seismogenic conditions Seismic velocity structure across the 2013 Craig, Alaska rupture from aftershock tomography: Implications for seismogenic conditions
The 2013 Craig, Alaska MW 7.5 earthquake ruptured along ∼150 km of the Queen Charlotte Fault (QCF), a right-lateral strike-slip plate boundary fault separating the Pacific and North American plates. Regional shear wave analyses suggest that the Craig earthquake rupturepropagated in the northward direction faster than the S-wave (supershear). Theoretical studies suggest that a bimaterial...
Authors
Maureen A. L. Walton, Emily C. Roland, Jacob I. Walter, Sean P. S. Gulick, Peter J. Dotray
Time-dependent pore filling Time-dependent pore filling
Capillarity traps fluids in porous media during immiscible fluid displacement. Most field situations involve relatively long time scales, such as hydrocarbon migration into reservoirs, resource recovery, nonaqueous phase liquid remediation, geological CO2 storage, and sediment‐atmosphere interactions. Yet laboratory studies and numerical simulations of capillary phenomena rarely consider...
Authors
Zhonghao Sun, Junbong Jang, J. Carlos Santamarina
Related
Filter Total Items: 20
Organic geochemical investigation of far‐field tsunami deposits of the Kahana Valley, O'ahu, Hawai'i Organic geochemical investigation of far‐field tsunami deposits of the Kahana Valley, O'ahu, Hawai'i
Far‐field tsunami deposits observed in the Kahana Valley, O'ahu, Hawai'i (USA), were investigated for their organic‐geochemical content. During short high‐energy events, (tsunamis and storms) organic and chemical components are transported with sediment from marine to terrestrial areas. This study investigates the use of anthropogenic based organic geochemical compounds (such as...
Authors
Piero Bellanova, Mike Frenken, Bruce M. Richmond, Jan Schwarzbauer, SeanPaul La Selle, Frances Griswold, Bruce E. Jaffe, Alan R. Nelson, Klaus Reicherter
Physical mechanisms influencing localized patterns of temperature variability and coral bleaching within a system of reef atolls Physical mechanisms influencing localized patterns of temperature variability and coral bleaching within a system of reef atolls
Interactions between oceanic and atmospheric processes within coral reefs can significantly alter local-scale ( 60%) over most of this system; however, the bleaching patterns were not uniform. Little is known about the processes governing thermodynamic variability within atolls, particularly those that are dominated by large amplitude tides. Here, we identify three mechanisms at Scott...
Authors
Rebecca H. Green, Ryan J. Lowe, Mark L. Buckley, Taryn M. Lopez, James Gilmour
Marshes are the new beaches: Integrating sediment transport into restoration planning Marshes are the new beaches: Integrating sediment transport into restoration planning
Recent coastal storms and associated recovery efforts have led to increased investment in nature-based coastal protection, including restoration of salt marshes and construction of living shorelines. In particular, many of these efforts focus on increasing vertical elevation through sediment nourishment, where sediment is removed from the tidal channel and placed on the marsh plain, or...
Authors
Neil K. Ganju
Azimuthal seismic anisotropy of 70 Ma Pacific‐plate upper mantle Azimuthal seismic anisotropy of 70 Ma Pacific‐plate upper mantle
Plate formation and evolution processes are predicted to generate upper mantle seismic anisotropy and negative vertical velocity gradients in oceanic lithosphere. However, predictions for upper mantle seismic velocity structure do not fully agree with the results of seismic experiments. The strength of anisotropy observed in the upper mantle varies widely. Further, many refraction...
Authors
H. F. Mark, D. Lizarralde, J. A. Collins, Nathaniel C. Miller, G. Hirth, J. B. Gaherty, R. L. Evans
Considerations for Globigerinoides ruber (white and pink) paleoceanography: Comprehensive insights from a long‐running sediment trap Considerations for Globigerinoides ruber (white and pink) paleoceanography: Comprehensive insights from a long‐running sediment trap
We present a detailed analysis of the seasonal distribution, size, morphological variability and geochemistry of co‐occurring pink and white chromotypes of Globigerinoides ruberfrom a high‐resolution (1–2 weeks) and long‐running sediment trap time series in the northern Gulf of Mexico. We find no difference in the seasonal flux of the two chromotypes. Although flux of G. ruber is...
Authors
Julie N. Richey, Kaustubh Thirumalai, Deborah Khider, Caitlin E. Reynolds, Judson W. Partin, Terrence M. Quinn
Climate change, coral loss, and the curious case of the parrotfish paradigm: Why don't marine protected areas improve reef resilience? Climate change, coral loss, and the curious case of the parrotfish paradigm: Why don't marine protected areas improve reef resilience?
Scientists have advocated for local interventions, such as creating marine protected areas and implementing fishery restrictions, as ways to mitigate local stressors to limit the effects of climate change on reef-building corals. However, in a literature review, we find little empirical support for the notion of managed resilience. We outline some reasons for why marine protected areas...
Authors
John F. Bruno, Isabelle M. Cote, Lauren Toth
Seismic velocity structure across the 2013 Craig, Alaska rupture from aftershock tomography: Implications for seismogenic conditions Seismic velocity structure across the 2013 Craig, Alaska rupture from aftershock tomography: Implications for seismogenic conditions
The 2013 Craig, Alaska MW 7.5 earthquake ruptured along ∼150 km of the Queen Charlotte Fault (QCF), a right-lateral strike-slip plate boundary fault separating the Pacific and North American plates. Regional shear wave analyses suggest that the Craig earthquake rupturepropagated in the northward direction faster than the S-wave (supershear). Theoretical studies suggest that a bimaterial...
Authors
Maureen A. L. Walton, Emily C. Roland, Jacob I. Walter, Sean P. S. Gulick, Peter J. Dotray
Time-dependent pore filling Time-dependent pore filling
Capillarity traps fluids in porous media during immiscible fluid displacement. Most field situations involve relatively long time scales, such as hydrocarbon migration into reservoirs, resource recovery, nonaqueous phase liquid remediation, geological CO2 storage, and sediment‐atmosphere interactions. Yet laboratory studies and numerical simulations of capillary phenomena rarely consider...
Authors
Zhonghao Sun, Junbong Jang, J. Carlos Santamarina