Lisa E Osterman (Former Employee)
Science and Products
Filter Total Items: 28
Community structure of foraminiferal communities within temporal biozones from the western Arctic Ocean Community structure of foraminiferal communities within temporal biozones from the western Arctic Ocean
Community structure is often an overlooked dimension of biodiversity. Knowledge of community structure, the statistical distribution of the relative species abundance vector, makes possible comparisons and contrasts across time, space, and/or environmental conditions. Our results indicate that species of Arctic foraminifera in age-correlated cores from abyssal depths are each best...
Authors
Lee-Ann C. Hayek, Martin A. Buzas, Lisa A. Osterman
Examining offshore sediment-hosted contaminant transport from Hurricane Katrina Examining offshore sediment-hosted contaminant transport from Hurricane Katrina
A rapid-response expedition was organized after the passage of Hurricane Katrina to investigate potential offshore environmental impacts and storm-induced sediment-transport processes. Both water-column and sediment samples were collected on the Louisiana shelf for a full complement of organic, inorganic, and geochronological tracers. Based on excess lead-210 (210Pb) inventories in cores...
Authors
Peter W. Swarzenski, Pamela L. Campbell, Richard Z. Poore, Lisa E. Osterman, Robert J. Rosenbauer
Gulf of Mexico dead zone —The last 150 years Gulf of Mexico dead zone —The last 150 years
'Gulf of Mexico Dead Zone-The Last 150 Years' discusses the dead zone that forms seasonally in the northern Gulf of Mexico when subsurface waters become depleted in dissolved oxygen and cannot support most life.
Authors
Lisa Osterman, P.W. Swarzenski, R.Z. Poore
Benthic foraminiferal census data from Gulf of Mexico cores (Texas and Louisiana continental shelf) Benthic foraminiferal census data from Gulf of Mexico cores (Texas and Louisiana continental shelf)
No abstract available.
Authors
Lisa E. Osterman, Kate Pavich, Jessica Caplan
Magnetobiochronologic synthesis of ODP Leg 178 rise sediments from the Pacific sector of the Southern Ocean: Sites 1095, 1096, and 11011 Magnetobiochronologic synthesis of ODP Leg 178 rise sediments from the Pacific sector of the Southern Ocean: Sites 1095, 1096, and 11011
During Ocean Drilling Program (ODP) Leg 178, eight holes were drilled at three sites (1095, 1096, and 1101) on the continental rise along the western Antarctic Peninsula. The rise sediments proved to be good paleomagnetic recorders and provided continuous magnetostratigraphic records at all three sites. Biosiliceous microfossils, particularly diatoms and radiolarians, were present in the...
Authors
Masao Iwai, Gary D. Acton, David Lazarus, Lisa E. Osterman, Trevor Williams
SHE analysis for biozonation of benthic foraminiferal assemblages from western arctic ocean SHE analysis for biozonation of benthic foraminiferal assemblages from western arctic ocean
Benthic foraminiferal species abundance in samples from three Mendeleyev Ridge box cores were analyzed by cluster analysis and the newer method of SHE analysis. Previously, the latter technique only has been used on foraminiferal data from depth transects of modern surface sediment samples. Unlike most methods, which initially compare all possible pairs of samples, the SHE procedure...
Authors
Lisa E. Osterman, Martin A Buzas, Lee-Ann C. Hayek
Science and Products
Filter Total Items: 28
Community structure of foraminiferal communities within temporal biozones from the western Arctic Ocean Community structure of foraminiferal communities within temporal biozones from the western Arctic Ocean
Community structure is often an overlooked dimension of biodiversity. Knowledge of community structure, the statistical distribution of the relative species abundance vector, makes possible comparisons and contrasts across time, space, and/or environmental conditions. Our results indicate that species of Arctic foraminifera in age-correlated cores from abyssal depths are each best...
Authors
Lee-Ann C. Hayek, Martin A. Buzas, Lisa A. Osterman
Examining offshore sediment-hosted contaminant transport from Hurricane Katrina Examining offshore sediment-hosted contaminant transport from Hurricane Katrina
A rapid-response expedition was organized after the passage of Hurricane Katrina to investigate potential offshore environmental impacts and storm-induced sediment-transport processes. Both water-column and sediment samples were collected on the Louisiana shelf for a full complement of organic, inorganic, and geochronological tracers. Based on excess lead-210 (210Pb) inventories in cores...
Authors
Peter W. Swarzenski, Pamela L. Campbell, Richard Z. Poore, Lisa E. Osterman, Robert J. Rosenbauer
Gulf of Mexico dead zone —The last 150 years Gulf of Mexico dead zone —The last 150 years
'Gulf of Mexico Dead Zone-The Last 150 Years' discusses the dead zone that forms seasonally in the northern Gulf of Mexico when subsurface waters become depleted in dissolved oxygen and cannot support most life.
Authors
Lisa Osterman, P.W. Swarzenski, R.Z. Poore
Benthic foraminiferal census data from Gulf of Mexico cores (Texas and Louisiana continental shelf) Benthic foraminiferal census data from Gulf of Mexico cores (Texas and Louisiana continental shelf)
No abstract available.
Authors
Lisa E. Osterman, Kate Pavich, Jessica Caplan
Magnetobiochronologic synthesis of ODP Leg 178 rise sediments from the Pacific sector of the Southern Ocean: Sites 1095, 1096, and 11011 Magnetobiochronologic synthesis of ODP Leg 178 rise sediments from the Pacific sector of the Southern Ocean: Sites 1095, 1096, and 11011
During Ocean Drilling Program (ODP) Leg 178, eight holes were drilled at three sites (1095, 1096, and 1101) on the continental rise along the western Antarctic Peninsula. The rise sediments proved to be good paleomagnetic recorders and provided continuous magnetostratigraphic records at all three sites. Biosiliceous microfossils, particularly diatoms and radiolarians, were present in the...
Authors
Masao Iwai, Gary D. Acton, David Lazarus, Lisa E. Osterman, Trevor Williams
SHE analysis for biozonation of benthic foraminiferal assemblages from western arctic ocean SHE analysis for biozonation of benthic foraminiferal assemblages from western arctic ocean
Benthic foraminiferal species abundance in samples from three Mendeleyev Ridge box cores were analyzed by cluster analysis and the newer method of SHE analysis. Previously, the latter technique only has been used on foraminiferal data from depth transects of modern surface sediment samples. Unlike most methods, which initially compare all possible pairs of samples, the SHE procedure...
Authors
Lisa E. Osterman, Martin A Buzas, Lee-Ann C. Hayek