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Author |
Pauline Goulet, Christophe Guinet, Claudio Campagna, Julieta Campagna, Peter Lloyd Tyack, Mark Johnson |
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Title |
Flash and grab: deep-diving southern elephant seals trigger anti-predator flashes in bioluminescent prey |
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Year |
2020 |
Publication |
Journal of Experimental Biology |
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Volume |
223 |
Issue |
10 |
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1201 |
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0022-0949 |
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yes |
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8008 |
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Title |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
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Year |
2020 |
Publication |
Frontiers in Marine Science |
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Volume |
7 |
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Pages |
595 |
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Abstract |
The diving behavior of southern elephant seals, Mirounga leonina, is investigated through the analysis of time-depth dive profiles. The originality of this work is to consider dive profiles as continuous curves. For this purpose, a Functional Data Analysis (FDA) approach is proposed for the shape analysis of a collection of dive profiles. Complexity of dive shapes is characterized by a mixture of three main shape variations accounting for about 80% of the entire variability: U or V shape, vertical depth variability during the bottom time, and skewed left or right. Model-based clustering allows the identification of eight dive shape clusters in a quick and automated way. Connection between shape patterns and classical descriptors, as well as the number of prey capture events, is achieved, showing that the clusters are coherent to specific foraging behaviors previously identified in the literature labeled as drift, exploratory and active dives. Finally, FDA is compared to classical methods relying on the computation of discrete dive descriptors. Results show that taking the shape of the dive as a whole is more resilient to corrupted or incomplete sampled data. FDA is, therefore, an efficient tool adapted for processing and comparing dive data with different sampling frequencies and for improving the quality and the accuracy of transmitted data. |
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1201 |
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2296-7745 |
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yes |
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8009 |
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Author |
Marine Duc |
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Journal |
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2020 |
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Issue |
2020/1-2 |
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1213 |
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0755-7809 |
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yes |
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7641 |
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Author |
Duc Marine |
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Peer-reviewed symposium |
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2020 |
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Abstract |
Nb: Postponed Due To Covid Crisis |
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1213 |
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yes |
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Call Number |
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Serial |
7749 |
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2020 |
Publication |
Lithic Technology |
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Volume |
46 |
Issue |
1 |
Pages |
2-26 |
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Keywords |
Alaska apprenticeship lithic technology microblade prehistory |
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Abstract |
In Beringia, as in many other parts of the world, stone tools are the main diagnostic cultural artifact for understanding prehistoric societies. The analysis of lithic assemblages is the basis for establishing connections between sites and techno-complexes. Through highlighting major technological trends, archaeologists are able to interpret processes such as cultural continuity and migrations. Here we present a fine-grained analysis of two assemblages to perceive in detail the individuals behind the lithic productions, more specifically apprentice knappers. Although recognition of apprenticeship in a prehistoric context is not new, this is the first such study for Alaska and Beringia. We focus on two distinct assemblages with microblade technology: the late Pleistocene component of Swan Point CZ4b (Tanana valley) and the early Holocene component of Little Panguingue Creek C2 (Nenana valley), both in central Alaska. |
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1217 |
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ISSN |
0197-7261 |
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0197-7261 |
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yes |
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Serial |
7632 |
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Author |
Baltzer, A.; Robert, L.; Roussel, O. |
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Communication |
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Year |
2020 |
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1223 |
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yes |
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8049 |
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Author |
Dupuis E., Sultan E. |
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Peer-reviewed symposium |
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2020 |
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1237 |
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yes |
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Serial |
8053 |
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Author |
B. Lauer, R. Grandin, Y. Klinger |
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Title |
Fault Geometry and Slip Distribution of the 2013 Mw 7.7 Balochistan Earthquake From Inversions of SAR and Optical Data |
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Year |
2020 |
Publication |
Journal of Geophysical Research: Solid Earth |
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Volume |
125 |
Issue |
7 |
Pages |
e2019JB018380 |
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Keywords |
Balochistan earthquake earthquake rupture modeling earthquake source processes InSAR optical data shallow slip deficit |
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133 |
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2169-9356 |
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yes |
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Serial |
7664 |
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Author |
Ross J. Turner, Martin Gal, Mark A. Hemer, Anya M. Reading |
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Title |
Impacts of the Cryosphere and Atmosphere on Observed Microseisms Generated in the Southern Ocean |
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Year |
2020 |
Publication |
Journal of Geophysical Research: Earth Surface |
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Volume |
125 |
Issue |
2 |
Pages |
e2019JF005354 |
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133 |
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2169-9011 |
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yes |
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7668 |
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Title |
Using Component Ratios to Detect Metadata and Instrument Problems of Seismic Stations: Examples from 18 Yr of GEOSCOPE Data |
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2020 |
Publication |
Seismological research letters |
Abbreviated Journal |
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Volume |
91 |
Issue |
1 |
Pages |
272-286 |
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133 |
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yes |
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Call Number |
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7672 |
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