Lisa E Osterman (Former Employee)
Science and Products
Filter Total Items: 28
Holocene evolution of Apalachicola Bay, Florida Holocene evolution of Apalachicola Bay, Florida
A program of geophysical mapping and vibracoring was conducted in 2007 to better understand the geologic evolution of Apalachicola Bay and its response to sea-level rise. A detailed geologic history could help better understand how this bay may respond to both short-term (for example, storm surge) and long-term sea-level rise. The results of this study were published (Osterman and others...
Authors
Lisa E. Osterman, David C. Twichell
Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida
Apalachicola Bay and St. George Sound contain the largest oyster fishery in Florida, and the growth and distribution of the numerous oyster reefs here are the combined product of modern estuarine conditions in the bay and its late Holocene evolution. Sidescan-sonar imagery, bathymetry, high-resolution seismic profiles, and sediment cores show that oyster beds occupy the crests of a...
Authors
D. Twichell, L. Edmiston, Brian Andrews, W. Stevenson, J. Donoghue, Richard Z. Poore, Lisa E. Osterman
Biological, Physical, And Chemical Data From Gulf of Mexico Core PE0305-GC1 Biological, Physical, And Chemical Data From Gulf of Mexico Core PE0305-GC1
This paper presents benthic foraminiferal census data, and magnetic susceptibility, 210Pb , radiocarbon, and geochemical measurements from gravity core PE0305-GC1 (=GC1). Core GC1 was collected from the Louisiana continental shelf as part of an initiative to investigate the geographic and temporal extent of hypoxia, low-oxygen water, in the Gulf of Mexico. Hypoxia (
Authors
Lisa E. Osterman, Peter W. Swarzenski, David Hollander
Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04 Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04
This paper presents the benthic foraminiferal census data, magnetic susceptibility measurements, vanadium and organic geochemistry (carbon isotope, sterols, and total organic carbon) data from the MRD05-04 gravity and box cores. The MRD05-04 cores were obtained from the Louisiana continental shelf in an on-going initiative to examine the geographic and temporal extent of hypoxia, low...
Authors
Lisa E. Osterman, Pamela L. Campbell, Peter W. Swarzenski, John P. Ricardo
Benthic foraminiferal census data from Louisiana continental shelf cores, Gulf of Mexico Benthic foraminiferal census data from Louisiana continental shelf cores, Gulf of Mexico
An area of oxygen-depleted bottom- and subsurface-water (hypoxia = dissolved oxygen 2 mg/L-1) occurs seasonally on the Louisiana Shelf near the Mississippi River. The area of hypoxia, also known as the “dead zone,” forms when spring and early summer freshwater flow from the Mississippi River supplies a large amount of nutrients to the shelf while creating a freshwater lens, or cap, above...
Authors
Lisa E. Osterman, Wendy S. Kelly, John P. Ricardo
Holocene evolution of Apalachicola Bay, Florida Holocene evolution of Apalachicola Bay, Florida
A program of geophysical mapping and vibracoring was conducted to better understand the geologic evolution of Apalachicola Bay. Analyses of the geophysical data and sediment cores along with age control provided by 34 AMS 14C dates on marine shells and wood reveal the following history. As sea level rose in the early Holocene, fluvial deposits filled the Apalachicola River paleochannel...
Authors
Lisa E. Osterman, David C. Twichell, Richard Z. Poore
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
Holocene evolution of Apalachicola Bay, Florida Holocene evolution of Apalachicola Bay, Florida
A program of geophysical mapping and vibracoring was conducted in 2007 to better understand the geologic evolution of Apalachicola Bay and its response to sea-level rise. A detailed geologic history could help better understand how this bay may respond to both short-term (for example, storm surge) and long-term sea-level rise. The results of this study were published (Osterman and others...
Authors
Lisa E. Osterman, David C. Twichell
Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida
Apalachicola Bay and St. George Sound contain the largest oyster fishery in Florida, and the growth and distribution of the numerous oyster reefs here are the combined product of modern estuarine conditions in the bay and its late Holocene evolution. Sidescan-sonar imagery, bathymetry, high-resolution seismic profiles, and sediment cores show that oyster beds occupy the crests of a...
Authors
D. Twichell, L. Edmiston, Brian Andrews, W. Stevenson, J. Donoghue, Richard Z. Poore, Lisa E. Osterman
Biological, Physical, And Chemical Data From Gulf of Mexico Core PE0305-GC1 Biological, Physical, And Chemical Data From Gulf of Mexico Core PE0305-GC1
This paper presents benthic foraminiferal census data, and magnetic susceptibility, 210Pb , radiocarbon, and geochemical measurements from gravity core PE0305-GC1 (=GC1). Core GC1 was collected from the Louisiana continental shelf as part of an initiative to investigate the geographic and temporal extent of hypoxia, low-oxygen water, in the Gulf of Mexico. Hypoxia (
Authors
Lisa E. Osterman, Peter W. Swarzenski, David Hollander
Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04 Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04
This paper presents the benthic foraminiferal census data, magnetic susceptibility measurements, vanadium and organic geochemistry (carbon isotope, sterols, and total organic carbon) data from the MRD05-04 gravity and box cores. The MRD05-04 cores were obtained from the Louisiana continental shelf in an on-going initiative to examine the geographic and temporal extent of hypoxia, low...
Authors
Lisa E. Osterman, Pamela L. Campbell, Peter W. Swarzenski, John P. Ricardo
Benthic foraminiferal census data from Louisiana continental shelf cores, Gulf of Mexico Benthic foraminiferal census data from Louisiana continental shelf cores, Gulf of Mexico
An area of oxygen-depleted bottom- and subsurface-water (hypoxia = dissolved oxygen 2 mg/L-1) occurs seasonally on the Louisiana Shelf near the Mississippi River. The area of hypoxia, also known as the “dead zone,” forms when spring and early summer freshwater flow from the Mississippi River supplies a large amount of nutrients to the shelf while creating a freshwater lens, or cap, above...
Authors
Lisa E. Osterman, Wendy S. Kelly, John P. Ricardo
Holocene evolution of Apalachicola Bay, Florida Holocene evolution of Apalachicola Bay, Florida
A program of geophysical mapping and vibracoring was conducted to better understand the geologic evolution of Apalachicola Bay. Analyses of the geophysical data and sediment cores along with age control provided by 34 AMS 14C dates on marine shells and wood reveal the following history. As sea level rose in the early Holocene, fluvial deposits filled the Apalachicola River paleochannel...
Authors
Lisa E. Osterman, David C. Twichell, Richard Z. Poore
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