S. Jevrejeva, A. Matthews, A. Slangen. (2017). The Twentieth-Century Sea Level Budget: Recent Progress and Challenges (Vol. 38).
Keywords: Data archeology Observing system Sea level budget Sea level rise
Programme: 688
|
. (2017). Statistical Analysis of Solar Events Associated with Storm Sudden Commencements over One Year of Solar Maximum During Cycle 23: Propagation from the Sun to the Earth and Effects (Vol. 293). Bachelor's thesis, , .
Keywords: Earth: SSC geoeffectiveness Solar wind: ICME Sun: CME
Programme: 139,312
|
Mioara Mandea, Michael Purucker. (2017). The Varying Core Magnetic Field from a Space Weather Perspective (Vol. 214).
Abstract: This paper summarizes recent advances in our understanding of geomagnetism, and its relevance to terrestrial space weather. It also discusses specific core magnetic field features such as the dipole moment decay, the evolution of the South Atlantic anomaly, and the location of the magnetic poles that are of importance for the practice of space weather.
Keywords: Core field Dipole decay Secular acceleration Secular variation South Atlantic Anomaly
Programme: 139
|
. (2015). First Observation of a Four-egg Clutch of Long-tailed Jaeger (Stercorarius longicaudus) (Vol. 127).
Abstract: Long-tailed Jaegers (Stercorarius longicaudus) normally lay one or two eggs (rarely three), with a maximum of two eggs set by the existence of only two brood patches. Here, however, we present the first documentation of a clutch of four eggs in a Long-tailed Jaeger nest found at Zackenberg in northeastern Greenland.
Programme: 1036
|
. (2016). Caffeine and saliva steroids in young healthy recreationally trained women: impact of regular caffeine intake (Vol. 52).
Keywords: Caffeine Caffeine Intake Cortisol Cortisol Concentration DHEA
Programme: 1199
|
Sabrina Renaud, Ronan Ledevin, Benoit Pisanu, Jean-Louis Chapuis, Petra Quillfeldt, Emilie A. Hardouin. (2018). Divergent in shape and convergent in function: Adaptive evolution of the mandible in Sub-Antarctic mice (Vol. 72).
Abstract: Convergent evolution in similar environments constitutes strong evidence of adaptive evolution. Transported with people around the world, house mice colonized even remote areas, such as Sub-Antarctic islands. There, they returned to a feral way of life, shifting towards a diet enriched in terrestrial macroinvertebrates. Here, we test the hypothesis that this triggered convergent evolution of the mandible, a morphological character involved in food consumption. Mandible shape from four Sub-Antarctic islands was compared to phylogeny, tracing the history of colonization, and climatic conditions. Mandible shape was primarily influenced by phylogenetic history, thus discarding the hypothesis of convergent evolution. The biomechanical properties of the jaw were then investigated. Incisor in-lever and temporalis out-lever suggested an increase in the velocity of incisor biting, in agreement with observations on various carnivorous and insectivorous rodents. The mechanical advantage related to incisor biting also revealed an increased functional performance in Sub-Antarctic populations, and appears to be an adaptation to catch prey more efficiently. The amount of change involved was larger than expected for a plastic response, suggesting microevolutionary processes were evolved. This study thus denotes some degree of adaptive convergent evolution related to changes in habitat-related changes in dietary items in Sub-Antarctic mice, but only regarding simple, functionally relevant aspects of mandible morphology.
Keywords: Adaptive convergence biomechanics geometric morphometrics mouse mandible Mus musculus domesticus
Programme: 136
|
. (2018). How Does Ground Clutter Affect CloudSat Snowfall Retrievals Over Ice Sheets? (Vol. 16).
Abstract: CloudSat has provided the first spaceborne snowfall observations in polar regions. Nevertheless, CloudSat retrievals may be affected by ground clutter even if the snowfall rate at the surface is estimated from the reflectivity measured at about 1200 m above land/ice surface. In this study, the impact of ground clutter contamination on CloudSat snowfall retrievals over the Antarctic and Greenland ice sheets is investigated. Our results suggest that ground clutter affects CloudSat snowfall observations over some areas, particularly over complex terrain such as mountain ranges and fjords. Over these areas, the snowfall rates deduced from CloudSat observations can be, therefore, significantly overestimated. This has implications when developing snowfall climatologies from CloudSat products.
Keywords: Antarctica atmospheric temperature climatology clouds Clouds CloudSat CloudSat products CloudSat retrievals CloudSat snowfall observations CloudSat snowfall retrievals Clutter glaciology ground clutter ground clutter contamination ice Ice ice sheets land/ice surface meteorological radar remote sensing by radar snow Snow snowfall snowfall climatologies snowfall rate spaceborne radar spaceborne snowfall observations Surface contamination Surface topography
Programme: 1013
|
. (2018). From early life to senescence: individual heterogeneity in a long-lived seabird (Vol. 88).
|
N. R. Zelinskiy, N. G. Kleimenova, O. V. Kozyreva, S. M. Agayan, Sh. R. Bogoutdinov, A. A. Soloviev. (2014). Algorithm for recognizing Pc3 geomagnetic pulsations in 1-s data from INTERMAGNET equatorial observatories (Vol. 50).
Abstract: The methods are suggested for analyzing the data of three-component geomagnetic observations in order to automatically recognize time anomalies-pulsations in the geomagnetic field. These methods include preliminary bandpass filtering of the data, calculating the eigenvalues of the covariance matrix of magnetic components in a moving time window, computing the generalized variance of the eigenvalues (generalization is understood as raising to a power that is distinct from the traditional power of 2), averaging the variance, and identifying the time intervals marked by the presence of pulsations by the criterion of the averaged variance of eigenvalues to exceed a certain threshold specified by the fuzzy-logic methods.
Keywords: Fuzzy Bound Fuzzy Logic Method Local Magnetic Time Magnetic Observatory Solid Earth
Programme: 139
|
. (2018). Organochlorines, perfluoroalkyl substances, mercury, and egg incubation temperature in an Arctic seabird: Insights from data loggers (Vol. 37).
Keywords: Behavioral toxicology Black-legged kittiwake Brood patch Endocrine disruptors Hatching success Organic contamination Trace metals Wildlife toxicology
Programme: 330
|