scholarly journals Large-Volume WOCE Radiocarbon Sampling in the Pacific Ocean

Radiocarbon ◽  
1996 ◽  
Vol 38 (3) ◽  
pp. 519-561 ◽  
Author(s):  
Minze Stuiver ◽  
H. G. Östlund ◽  
Robert M. Key ◽  
Paula J. Reimer
Keyword(s):  
Pacific Ocean ◽  
Large Volume ◽  
University Of Washington ◽  
Data Set ◽  
Comprehensive Data ◽  
The Pacific ◽  
The Pacific Ocean ◽  
University Of Miami ◽  
The University

At the University of Miami Tritium Laboratory and the University of Washington Quaternary Isotope Laboratory, more than 1000 large-volume Pacific Ocean radiocarbon samples were measured for the WOCE program. Here we present a comprehensive data set, and a brief discussion of our findings.

scholarly journals The political biogeography of migratory marine predators

2019 ◽  
Author(s):  
Autumn-Lynn Harrison
Keyword(s):  
Pacific Ocean ◽  
The Political ◽  
Migratory Species ◽  
Data Set ◽  
Leatherback Turtles ◽  
Annual Cycles ◽  
Marine Predators ◽  
The Pacific ◽  
The Pacific Ocean ◽  
International Strategies

We synthesized a large tracking data set from the Tagging of Pacific Predators to show how the movements and migratory phenology of 1,648 individuals representing 14 species—from leatherback turtles to white sharks—relate to the geopolitical boundaries of the Pacific Ocean throughout species’ annual cycles. Cumulatively, these species visited 86% of Pacific Ocean countries and some spent three-quarters of their annual cycles in the high seas. With our results, we offer answers to questions posed when designing international strategies for managing migratory species.

scholarly journals Spatial sea-level reconstruction in the Baltic Sea and in the Pacific Ocean from tide gauges observations

2016 ◽  
Vol 59 (3) ◽  
Author(s):  
Marco Olivieri ◽  
Giorgio Spada
Keyword(s):  
Pacific Ocean ◽  
Baltic Sea ◽  
Sea Level ◽  
Tide Gauge ◽  
Tide Gauges ◽  
The Baltic Sea ◽  
Data Set ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Baltic

<p>Exploiting the Delaunay interpolation, we present a newly implemented 2-D sea-level reconstruction from coastal sea-level observations to open seas, with the aim of characterizing the spatial variability of the rate of sea-level change. To test the strengths and weaknesses of this method and to determine its usefulness in sea-level interpolation, we consider the case studies of the Baltic Sea and of the Pacific Ocean. In the Baltic Sea, a small basin well sampled by tide gauges, our reconstructions are successfully compared with absolute sea-level observations from altimetry during 1993-2011. The regional variability of absolute sea level observed across the Pacific Ocean, however, cannot be reproduced. We interpret this result as the effect of the uneven and sparse tide gauge data set and of the composite vertical land movements in and around the region. Useful considerations arise that can serve as a basis for developing sophisticated approaches.</p>

scholarly journals Spatial distribution of oxygen-18 and deuterium in stream waters across the Japanese archipelago

2014 ◽  
Vol 11 (9) ◽  
pp. 10903-10930
Author(s):  
M. Katsuyama ◽  
T. Yoshioka ◽  
E. Konohira
Keyword(s):  
Spatial Distribution ◽  
Pacific Ocean ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
Data Set ◽  
Japanese Archipelago ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Japanese Archipelago ◽  
Stream Waters

Abstract. The spatial distribution of oxygen and hydrogen isotopic composition (δ18O and δ2H) of stream waters across Japan was clarified with a data set compiling sample data obtained from 1278 forest catchments during the summer of 2003. Both δ18O and δ2H values showed positive correlations with the mean annual air temperature and annual evapotranspiration, and negative correlations with latitude and elevation. Deuterium excess (d excess) values in stream waters were higher on the Sea of Japan side, and lower on the Pacific Ocean side, of the Japanese archipelago. The d excess in precipitation was generally higher in winter and lower in summer in Japan. The Sea of Japan side experiences a great deal of snowfall, and seasonal changes in monthly precipitation are rather small. In contrast, the Pacific Ocean side experiences a large amount of rainfall during summer with low levels of precipitation during the winter. Therefore, the lower d excess in stream waters on the Pacific Ocean side reflects summer precipitation, and the higher values on the Sea of Japan side are affected by delayed recharge from snowmelt. The isoscapes of stream water connote not only spatially integrated but also temporally integrated isotope signals of precipitation, and provide a framework for addressing applied hydrological, ecological, or meteorological research questions at regional scales, such as the effects of climate change.

scholarly journals Diversity and Life-cycle Analysis of Pacific Ocean Zooplankton by Videomicroscopy and DNA Barcoding. I. Cnidaria

2019 ◽  
Author(s):  
Peter J. Bryant ◽  
Timothy E. Arehart
Keyword(s):  
Life Cycle ◽  
Pacific Ocean ◽  
Dna Barcoding ◽  
Dna Barcodes ◽  
Putative Species ◽  
The Pacific ◽  
Solid Substrates ◽  
The Family ◽  
The Pacific Ocean ◽  
The University

AbstractMost, but not all cnidarian species in the classes Hydrozoa, Scyphozoa and Anthozoa have a life cycle in which a colonial, asexually reproducing hydroid phase alternates with a free-swimming, sexually reproducing medusa phase that, in the hydrozoans, is usually microscopic. Hydrozoan medusae were collected by zooplankton tows in Newport Bay and the Pacific Ocean near Newport Beach, California, and hydroid colonies were collected from solid substrates in the same areas. Specimens were documented by videomicroscopy, preserved in ethanol, and sent to the Canadian Centre for DNA Barcoding at the University of Guelph, Ontario, Canada for DNA barcoding.Among the order Anthomedusae (athecate hydroids), DNA barcoding allowed for the discrimination between the medusae of eight putative species of Bougainvillia, and the hydroid stages were documented for two of these. The medusae of three putative species of Amphinema were identified, and the hydroid stages were identified for two of them. DNA barcodes were obtained from medusae of one species of Cladonema, one adult of the By-the wind Sailor, Velella Velella, five putative species of Corymorpha with the matching hydroid phase for one; and Coryne eximia, Turritopsis dohrnii and Turritopsis nutricula with the corresponding hydroid phases. The actinula larvae and hydroid for the pink-hearted hydroid Ectopleura crocea were identified and linked by DNA barcoding.Among the order Leptomedusae (thecate hydroids) medusae were identified for Clytia elsaeoswaldae, Clytia gracilis and Clytia sp. 701 AC and matched with the hydroid phases for the latter two species. Medusae were matched with the hydroid phases for two species of Obelia (including O. dichotoma) and Eucheilota bakeri. Obelia geniculata was collected as a single hydroid. DNA barcodes were obtained for hydroids of Orthopyxis everta and three other species of Orthopyxis.The medusa of one member of the family Solmarisidae, representing the order Narcomedusae, and one member (Liriope tetraphylla) of the order Trachymedusae were recognized as medusae.In the Scyphozoa, DNA barcoding confirmed the planktonic larval stage (ephyra) of the Moon Jelly, Aurelia aurita, the adult medusa of which is occasionally common in and around Newport Bay. In the Anthozoa, antipathula larvae were identified from the Onion Anemone, Paranthus rapiformis and a cerinula larva was identified from the Tube-dwelling Anemone, Isarachnanthus nocturnus. We have yet to find the adults of these species locally.

scholarly journals Spatial distribution of oxygen-18 and deuterium in stream waters across the Japanese archipelago

2015 ◽  
Vol 19 (3) ◽  
pp. 1577-1588 ◽  
Author(s):  
M. Katsuyama ◽  
T. Yoshioka ◽  
E. Konohira
Keyword(s):  
Spatial Distribution ◽  
Pacific Ocean ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
Data Set ◽  
Japanese Archipelago ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Japanese Archipelago ◽  
Stream Waters

Abstract. The spatial distribution of oxygen and hydrogen isotopic composition (δ18O and δ2H) of stream waters across Japan was clarified with a data set by compiling sample data obtained from 1278 forest catchments during the summer of 2003. Both δ18O and δ2H values showed positive correlations with the mean annual air temperature and annual evapotranspiration, and negative correlations with latitude and elevation. Deuterium excess (d-excess) values in stream waters were higher on the Sea of Japan side, and lower on the Pacific Ocean side, of the Japanese archipelago. The d-excess in precipitation was generally higher in winter and lower in summer in Japan. The Sea of Japan side experiences a great deal of snowfall, and seasonal changes in monthly precipitation are rather small. In contrast, the Pacific Ocean side experiences a large amount of rainfall during summer with low levels of precipitation during the winter. Therefore, the lower d-excess in stream waters on the Pacific Ocean side reflects summer precipitation, and the higher values on the Sea of Japan side are affected by delayed recharge from snowmelt. The isoscapes of stream water connote not only spatially integrated but also temporally integrated isotope signals of precipitation and provide a framework for addressing applied hydrological, ecological, or meteorological research questions at regional scales, such as the effects of climate change.

scholarly journals Woce Radiocarbon IV: Pacific Ocean Results; P10, P13N, P14C, P18, P19 & S4P

Radiocarbon ◽  
2002 ◽  
Vol 44 (1) ◽  
pp. 239-392 ◽  
Author(s):  
Robert M Key ◽  
Paul D Quay ◽  
Peter Schlosser ◽  
A P McNichol ◽  
KF von Reden ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Ocean Circulation ◽  
Large Scale ◽  
World Ocean ◽  
Mass Spectrometry Analysis ◽  
Data Set ◽  
Spectrometry Analysis ◽  
The Pacific ◽  
World Ocean Circulation Experiment ◽  
The Pacific Ocean

The World Ocean Circulation Experiment, carried out between 1990 and 1997, provided the most comprehensive oceanic survey of radiocarbon to date. Approximately 10,000 samples were collected in the Pacific Ocean by U.S. investigators for both conventional large volume p counting and small volume accelerator mass spectrometry analysis techniques. Results from six cruises are presented. The data quality is as good or better than previous large-scale surveys. The 14C distribution for the entire WOCE Pacific data set is graphically described using mean vertical profiles and sections, and property-property plots.

scholarly journals STRAW (STRings for Absorption length in Water): pathfinder for a neutrino telescope in the deep Pacific Ocean

2019 ◽  
Vol 207 ◽  
pp. 06006
Author(s):  
Felix Henningsen ◽  
Keyword(s):  
Pacific Ocean ◽  
Neutrino Telescope ◽  
Detector Performance ◽  
Absorption Length ◽  
University Of Alberta ◽  
The Pacific ◽  
First Results ◽  
The Pacific Ocean ◽  
Deep Site ◽  
The University

Recently, an opportunity for a pathfinder mission towards a new neutrino telescope appeared in the Pacific Ocean. An existing deep-sea electrooptical infrastructure maintained by Ocean Networks Canada could pose as the base towards a potential new large-volume neutrino telescope. Two groups from Technical University Munich and the University of Alberta pursued the optical characterization of the 2.6 km deep site calledCascada Basinwithin the scope of the “Strings for Absorption length in Water” (STRAW) project. We present a summary of the 1-year construction timeline, impressions of the detector performance and first results.

On the Pacific Ocean regime shift

2001 ◽  
Vol 28 (19) ◽  
pp. 3721-3724
Author(s):  
Cathy Stephens
Keyword(s):  
Pacific Ocean ◽  
Regime Shift ◽  
The Pacific ◽  
The Pacific Ocean
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