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Your search keyword '"Thompson, P.A."' showing total 54 results
Start Over Author "Thompson, P.A." Publisher elsevier bv
54 results on '"Thompson, P.A."'

1. The Second International Indian Ocean Expedition (IIOE-2): Revisiting 110°E

Author

Beckley, L.E., Hood, R.R., Thompson, P.A., Beckley, L.E., Hood, R.R., and Thompson, P.A.

Abstract

This Special Issue is an outcome of ship's time aboard the RV Investigator to revisit 110°E. We gratefully acknowledge the Australian Marine National Facility and the assistance of the captain, crew, technical team, scientific participants and numerous funders in bringing voyage IN2019_V03 to fruition. The IIOE-2 Special Issues in Deep-Sea Research II have been advanced through SIBER (Sustained Indian Ocean Biogeochemistry and Ecosystem Research), a regional programme of IMBeR (Integrated

Published
2022

5. Structuring of larval fish assemblages along a coastal-oceanic gradient in the macro-tidal, tropical eastern Indian ocean

Author

Beckley, L.E., Holliday, D., Sutton, A.L., Weller, E., Olivar, M.P., Thompson, P.A., Beckley, L.E., Holliday, D., Sutton, A.L., Weller, E., Olivar, M.P., and Thompson, P.A.

Abstract

In the eastern Indian Ocean, the Kimberley region off north-western Australia is characterised by a wide continental shelf, complex coastal topography and very large tides (>10 m). Diversity of fishes is high although little is known about the distribution of their larvae in this dynamic region. This study investigated spatial variation in ichthyoplankton assemblages along four coastal-oceanic transects and related the results to tidal cycles and other environmental variables. Larvae representing 92 neritic and 21 mesopelagic teleost families were collected; this far exceeds the diversity described for other comparable tropical continental shelf and oceanic systems. Distinct ichthyoplankton assemblages characterised inner shelf (Engraulidae and Gobiidae were dominant families), outer shelf / slope (mixed neritic and mesopelagic taxa) and oceanic waters (mesopelagic taxa, particularly Myctophidae, Gonostomatidae and Phosichthyidae), and were correlated with changes in environmental variables (water depth, seawater density, mixed layer depth and zooplankton). The spring-neap tidal cycle and subsequent tides (same stations sampled 12 h apart) had no significant influence on larval fish assemblages. Coastal waters were delineated by a density front and larval fish assemblages were significantly different from offshore assemblages. This study provides new insights into the pelagic ecosystem in the tropical eastern Indian Ocean and contributes to the understanding of the role of environmental variables and physical forcing in the structuring of larval fish assemblages.

Published
2018

6. Characteristics, outcomes, prognostic factors and treatment of patients with T-cell prolymphocytic leukemia (T-PLL)

Author

Jain, P., primary, Aoki, E., additional, Keating, M., additional, Wierda, W.G., additional, O’Brien, S., additional, Gonzalez, G.N., additional, Ferrajoli, A., additional, Jain, N., additional, Thompson, P.A., additional, Jabbour, E., additional, Kanagal-Shamanna, R., additional, Pierce, S., additional, Alousi, A., additional, Hosing, C., additional, Khouri, I., additional, Estrov, Z., additional, Cortes, J., additional, Kantarjian, H., additional, Ravandi, F., additional, and Kadia, T.M., additional

Published
2017
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7. Identifying indicators and essential variables for marine ecosystems

Author

Hayes, K.R., primary, Dambacher, J.M., additional, Hosack, G.R., additional, Bax, N.J., additional, Dunstan, P.K., additional, Fulton, E.A., additional, Thompson, P.A., additional, Hartog, J.R., additional, Hobday, A.J., additional, Bradford, R., additional, Foster, S.D., additional, Hedge, P., additional, Smith, D.C., additional, and Marshall, C.J., additional

Published
2015
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10. Nutrients in an oligotrophic boundary current: Evidence of a new role for the Leeuwin Current

Author

Thompson, P.A., Wild-Allen, K., Lourey, M., Rousseaux, C., Waite, A.M., Feng, M., Beckley, L.E., Thompson, P.A., Wild-Allen, K., Lourey, M., Rousseaux, C., Waite, A.M., Feng, M., and Beckley, L.E.

Abstract

New observations along the continental shelf of Western Australia provide a novel explanation for the established ~60years relationship between Leeuwin Current (LC) strength and greater winter nitrate concentrations at 32°S plus the inter-annual variation in the magnitude of the annual, shelf-scale, phytoplankton bloom. The potential source of dissolved nitrogen to support the annual shelf scale phytoplankton bloom was identified as thin layers of an unprecedented areal extent, nitrate concentration and shallow nature that were observed off the northwest of Australia. We propose that the dissolved inorganic nitrogen (DIN) in these layers enters the LC at depth and then enters the euphotic zone via by three mechanisms: instability that results in a warm core eddy, cooling that deepens the surface mixed layer and shallowing of the thin layer. During the onset of the annual phytoplankton bloom along the west coast of Australia from 22°S to 34°S the poleward flowing LC was clearly evident as a surface intensified ocean boundary current transporting warmer, lower-salinity, greater-silicate waters in a shallow mixed layer rapidly southward. Between 24 and 26°S the core of the LC was present as a 50-100m deep layer over one or more thin layers, 15-50m thick, with high nitrate and low dissolved oxygen (DO). These layers were of lower salinity, cooler water with markedly reduced DO, high nitrate concentrations and distinct nitrate:silicate (NO3:Si(OH)4) nutrient ratios. As the LC flowed south it cooled and deepened thereby entraining the thin layers of high nitrate water into the euphotic zone. The LC also formed large (greater than 100km diameter) warm core eddies with a deep surface mixed layer that also entrained nitrate from these thin layers. In some locations as far south as 32°S the LC was still present with the thin layer of high nitrate intact but now within the euphotic zone. Thus, the available evidence suggests the LC arises under conditions that favour rapid and

Published
2011

11. Food web structure in two counter-rotating eddies based on δ15N and δ13C isotopic analyses

Author

Waite, A.M., Muhling, B.A., Holl, C.M., Beckley, L.E., Montoya, J.P., Strzelecki, J., Thompson, P.A., Pesant, S., Waite, A.M., Muhling, B.A., Holl, C.M., Beckley, L.E., Montoya, J.P., Strzelecki, J., Thompson, P.A., and Pesant, S.

Abstract

We measured the natural inventories of nitrogen and carbon stable isotopes within various ecosystem fractions of two counter-rotating eddies associated with the poleward Leeuwin Current (LC), off Western Australia. Isotopic signatures (δ15N and δ13C) were used as proxies for trophic transformation of inorganic and organic matter and are the basis for our discussion on food web functions in the two eddies. We present the first measurements of dissolved inorganic nitrogen (DIN) isotopic composition for the eastern Indian Ocean. We show that the large autotrophs (sampled within the >5-μm and >20-μm fractions of particulate organic matter (POM)), including a distinctive diatom population in the warm-core (WC) eddy, are likely to have taken up sources of DIN which were primarily nitrate, while the picoplankton are likely to have assimilated a large fraction of recycled ammonium. We show that phytoplankton in the cold-core (CC) eddy had distinctly more enriched δ15N signatures than in the WC eddy, probably due to the higher vertical fluxes of nitrate into the CC eddy. A clear negative correlation between mixed-layer depth and δ15N in POM across both eddies also supports the role of vertical nitrate fluxes in determining the primary δ15N signature of the autotrophs. Within the WC eddy, there was a significant δ13C-enrichment in comparison to the CC eddy across all size fractions of the mesozooplankton community, which, in combination with a low C:N molar ratio the >200- and >500-μm mesozooplankton size fractions, suggests a healthier mesozooplankton community, with greater lipid storage, in the WC eddy. This is consistent with the greater productivity and biomass of large diatoms in the WC eddy. Larval fish from the WC eddy also had an enriched δ13C signature compared to those from the CC eddy. The WC eddy had higher production rates than the CC eddy, and harboured a physiologically healthier population of zooplankton. Paradoxically, this seemed to occur despite higher ove

Published
2007

12. The Leeuwin Current and its eddies: An introductory overview

Author

Waite, A.M., Thompson, P.A., Pesant, S., Feng, M., Beckley, L.E., Domingues, C.M., Gaughan, D., Hanson, C.E., Holl, C.M., Koslow, T., Meuleners, M., Montoya, J.P., Moore, T., Muhling, B.A., Paterson, H., Rennie, S., Strzelecki, J., Twomey, L., Waite, A.M., Thompson, P.A., Pesant, S., Feng, M., Beckley, L.E., Domingues, C.M., Gaughan, D., Hanson, C.E., Holl, C.M., Koslow, T., Meuleners, M., Montoya, J.P., Moore, T., Muhling, B.A., Paterson, H., Rennie, S., Strzelecki, J., and Twomey, L.

Abstract

The Leeuwin Current (LC) is an anomalous poleward-flowing eastern boundary current that carries warm, low-salinity water southward along the coast of Western Australia. We present an introduction to a new body of work on the physical and biological dynamics of the LC and its eddies, collected in this Special Issue of Deep-Sea Research II, including (1) several modelling efforts aimed at understanding LC dynamics and eddy generation, (2) papers from regional surveys of primary productivity and nitrogen uptake patterns in the LC, and (3) the first detailed field investigations of the biological oceanography of LC mesoscale eddies. Key results in papers collected here include insight into the source regions of the LC and the Leeuwin Undercurrent (LUC), the energetic interactions of the LC and LUC, and their roles in the generation of warm-core (WC) and cold-core (CC) eddies, respectively. In near-shore waters, the dynamics of upwelling were found to control the spatio-temporal variability of primary production, and important latitudinal differences were found in the fraction of production driven by nitrate (the f-ratio). The ubiquitous deep chlorophyll maximum within LC was found to be a significant contributor to total water column production within the region. WC eddies including a single large eddy studied in 2000 contained relatively elevated chlorophyll a concentrations thought to originate at least in part from the continental shelf/shelf break region and to have been incorporated during eddy formation. During the Eddies 2003 voyage, a more detailed study comparing the WC and CC eddies illuminated more mechanistic details of the unusual dynamics and ecology of the eddies. Food web analysis suggested that the WC eddy had an enhanced "classic" food web, with more concentrated mesozooplankton and larger diatom populations than in the CC eddy. Finally, implications for fisheries management are addressed.

Published
2007

14. Outcomes of Surgically Treated Malignant Liver Tumors in Children: Age, Ethnicity, and Extent of Resection Predict Prognosis

Author

Rojas, Y., primary, Okcu, M.F., additional, Masand, P., additional, Lopez-Terrada, D., additional, Chintagumpala, M., additional, O'Mahony, C.A., additional, Wesson, D.E., additional, Goss, J.A., additional, Finegold, M.J., additional, Thompson, P.A., additional, Kim, E.S., additional, Nuchtern, J.G., additional, and Vasudevan, S.A., additional

Published
2013
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27. The Leeuwin Current and its eddies: An introductory overview

Author

Waite, A.M., primary, Thompson, P.A., additional, Pesant, S., additional, Feng, M., additional, Beckley, L.E., additional, Domingues, C.M., additional, Gaughan, D., additional, Hanson, C.E., additional, Holl, C.M., additional, Koslow, T., additional, Meuleners, M., additional, Montoya, J.P., additional, Moore, T., additional, Muhling, B.A., additional, Paterson, H., additional, Rennie, S., additional, Strzelecki, J., additional, and Twomey, L., additional

Published
2007
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30. Comparison of DNA adduct levels associated with oxidative stress in human pancreas

Author

Kadlubar, F.F., primary, Anderson, K.E., additional, Häussermann, S., additional, Lang, N.P., additional, Barone, G.W., additional, Thompson, P.A., additional, MacLeod, S.L., additional, Chou, M.W., additional, Mikhailova, M., additional, Plastaras, J., additional, Marnett, L.J., additional, Nair, J., additional, Velic, I., additional, and Bartsch, H., additional

Published
1998
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44. Superconducting magnets for the CBA project

Author

Bleser, E.J., primary, Cottingham, J.G., additional, Dahl, P.F., additional, Engelmann, R.J., additional, Fernow, R.C., additional, Garber, M., additional, Ghosh, A.K., additional, Goodzeit, C.L., additional, Greene, A.F., additional, Herrera, J.C., additional, Kahn, S.A., additional, Kaugerts, J., additional, Kelly, E.R., additional, Kirk, H.G., additional, Leroy, R.J., additional, Morgan, G.H., additional, Palmer, R.B., additional, Prodell, A.G., additional, Rahm, D.C., additional, Sampson, W.B., additional, Shutt, R.P., additional, Stevens, A.J., additional, Tannenbaum, M.J., additional, Thompson, P.A., additional, Wanderer, P.J., additional, and Willen, E.H., additional

Published
1985
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45. On the detection of 50 MeV γ-rays with a large modularized NaI(Tl) detector

Author

Carrington, R.L., primary, Eichler, R.A., additional, Hofstadter, R., additional, Hughes, E.B., additional, Rolfe, J., additional, McPharlin, T.P., additional, Bowman, J.D., additional, Cooper, M.D., additional, Hamm, M.E., additional, Hoffman, C.M., additional, Mischke, R.E., additional, Nagle, D.E., additional, Sarracino, J.S., additional, Thompson, P.A., additional, Anderson, H.L., additional, Kinnison, W.W., additional, Matis, H.S., additional, and Wright, S.C., additional

Published
1979
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