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Author |
Jochen Braunmiller |
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Year |
2018 |
Publication |
Moment Tensor Solutions: A Useful Tool for Seismotectonics |
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319-338 |
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Keywords  |
Intraplate Earthquakes Lower Rhine Embayment Regional Moment Tensor (RMT) SHmax Direction SHmax Orientation |
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Abstract |
Plate tectonics provides a highly successful framework to describe a wide range of geological observations invoking the motion of lithospheric plates. In its simplest form the plates are rigid and earthquakes are confined to boundaries where plates move relative to each other. |
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133 |
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978-3-319-77359-9 |
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yes |
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7883 |
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Author |
Spilmont Nicolas, Seuront Laurent, Meziane Tarik, Welsh David T, |
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Title |
Theres more to the picture than meets the eye: Sampling microphytobenthos in a heterogeneous environment
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Journal Article |
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Year |
2011 |
Publication |
Estuarine, Coastal and Shelf Science |
Abbreviated Journal |
Estuar Coast Shelf Sci |
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Volume |
95 |
Issue |
4 |
Pages |
470-476 |
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Keywords |
intertidal environment, chlorophyll, sediment sampling, spatial variations, sampling strategy, |
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1090 |
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ISSN |
0272-7714 |
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yes |
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Serial |
1521 |
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Title |
Towards a global higher-frequency sea level dataset |
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Journal |
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Year |
2016 |
Publication |
Geoscience Data Journal |
Abbreviated Journal |
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Volume |
3 |
Issue |
2 |
Pages |
50-59 |
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Keywords |
international data centres sea level data tide gauges |
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Abstract |
This paper describes the assembly of an updated quasi-global dataset of higher-frequency sea level information obtained from tide gauges operated by many agencies around the world. We believe that the construction of such a dataset is fundamental to scientific research in sea level variability and also to practical aspects of coastal engineering. A first version of the dataset was used in approximately a dozen published studies, and this second version is about twice the size, containing longer and more geographically representative sea level records. The dataset has acquired a digital object identifier and may be obtained from several sources. The paper mentions some of the merits of and deficiencies with the present version and takes a forward look at how the dataset may be updated in the future. |
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688 |
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2049-6060 |
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2049-6060 |
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yes |
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Serial |
7057 |
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Author |
Maraldi Claire, Lyard Florent, Testut Laurent, Coleman Richard, |
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Title |
Energetics of internal tides around the Kerguelen Plateau from modeling and altimetry
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Journal Article |
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Year |
2011 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
0148-0227 |
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Volume |
116 |
Issue |
C6 |
Pages |
C06004- |
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Keywords |
internal tides, Kerguelen Plateau, altimetry, barotropic tides, 4560 Oceanography: Physical: Surface waves and tides (1222), 4219 Oceanography: General: Continental shelf and slope processes (3002), 4223 Oceanography: General: Descriptive and regional oceanography, 4262 Oceanography: General: Ocean observing systems, 4534 Oceanography: Physical: Hydrodynamic modeling, |
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Abstract |
A barotropic tidal model, with a parameterization term to account for the internal wave drag energy dissipation, is used to examine areas of possible M2 internal tide generation in the Kerguelen Plateau region. Barotropic energy flux and a distribution of wave drag dissipation are computed. The results suggest important conversion of barotropic energy into baroclinic tide generation over the northern Kerguelen Plateau shelf break, consistent with a theoretical criterion based on ocean stratification, tidal forcing frequency, and bathymetric gradients. The sea surface height signatures of time-coherent internal tides are studied using TOPEX/Poseidon and Jason-1 altimeter data, whose ascending tracks cross nearly perpendicular to the eastern and western Kerguelen Plateau shelf break. Oscillations of a few centimeters associated with phase-locked internal tides propagate away from the plateau over distances of several hundred kilometers with a ~110 km wavelength. When reaching the frontal area of the Antarctic Circumpolar Current, the internal tide cannot be identified because of the aliasing of mesoscale variability into the same alias band as M2. Finally, using altimeter data, we estimate the M2 barotropic tidal power converted through the internal tide generation process. We find consistent values with the barotropic model parameterization estimation, which is also in good agreement with global internal tide model estimates. Combined with modeling, this study has shown that altimetry can be used to estimate internal tide dissipation.
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688 |
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AGU |
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ISSN |
0148-0227 |
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yes |
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Call Number |
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Serial |
3629 |
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Title |
Interior structure of terrestrial planets: Modeling Mars' mantle and its electromagnetic, geodetic, and seismic properties |
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Journal Article |
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Year |
2005 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
110 |
Issue |
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Keywords |
internal structure; Mars; network science; 5430 Planetary Sciences: Solid Surface Planets: Interiors; 6225 Planetary Sciences: Solar System Objects: Mars; 3672 Mineralogy and Petrology: Planetary mineralogy and petrology |
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Abstract |
We present a new procedure to describe the one-dimensional thermodynamical state and mineralogy of any Earth-like planetary mantle, with Mars as an example. The model parameters are directly related to expected results from a geophysical network mission, in this case electromagnetic, geodetic, and seismological processed observations supplemented with laboratory measurements. We describe the internal structure of the planet in terms of a one-dimensional model depending on a set of eight parameters: for the crust, the thickness and the mean density, for the mantle, the bulk volume fraction of iron, the olivine volume fraction, the pressure gradient, and the temperature profile, and for the core, its mass and radius. Currently, available geophysical and geochemical knowledge constrains the range of the parameter values. In the present paper, we develop the forward problem and present the governing equations from which synthetic data are computed using a set of parameter values. Among all Martian models fitting the currently available knowledge, we select eight candidate models for which we compute synthetic network science data sets. The synergy between the three geophysical experiments of electromagnetic sounding, geodesy, and seismology is emphasized. The stochastic inversion of the synthetic data sets will be presented in a companion paper. |
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Programme |
905;907 |
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Thesis |
Bachelor's thesis |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5567 |
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Title |
Reverberations, coda waves and ambient noise: Correlations at the global scale and retrieval of the deep phases
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Journal Article |
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Year |
2014 |
Publication |
Earth and Planetary Science Letters |
Abbreviated Journal |
Earth Planet. Sci. Lett. |
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Volume |
391 |
Issue |
1 |
Pages |
137-145 |
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Keywords |
interferometry, body waves, global scale, |
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Abstract |
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Programme |
133 |
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ISSN |
0012-821X |
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yes |
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Call Number |
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Serial |
5037 |
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2015 |
Publication |
Astronomische Nachrichten |
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Volume |
336 |
Issue |
7 |
Pages |
638-656 |
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Keywords |
instrumentation: photometers techniques: photometric telescopes |
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Programme |
1066 |
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ISSN |
1521-3994 |
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yes |
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Serial |
7979 |
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Author |
Crouzet N, Guillot T, Fressin F, Blazit A, the A STEP team, |
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Title |
Front- vs. back-illuminated CCD cameras for photometric surveys: a noise budget analysis
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Conference - International - Article with Reading Comitee |
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Year |
2007 |
Publication |
Astronomische Nachrichten |
Abbreviated Journal |
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Volume |
328 |
Issue |
8 |
Pages |
805 -808 |
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Keywords |
instrumentation: detectors, methods: numerica, technique: photometric, |
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1066 |
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WILEY-VCH Verlag |
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ISSN |
1521-3994 |
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yes |
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Serial |
1585 |
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Author |
Fossat Eric, Aristidi Eric, Agabi Karim, Bondoux Erick, Challita Zalpha, Jeanneaux Francois, Mekarnia Djamel, |
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Title |
Typical duration of good seeing sequences at Concordia
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Journal Article |
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Year |
2010 |
Publication |
ASTRONOMY & ASTROPHYSICS |
Abbreviated Journal |
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Volume |
517A |
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Pages |
4 -4 |
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Keywords |
Instrumentation and Methods for Astrophysics, |
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Abstract |
Context: The winter seeing at Concordia is essentially bimodal, excellent or quite poor, with relative proportions that depend on altitude above the snow surface. This paper studies the temporal behavior of the good seeing sequences. Aims: An efficient exploitation of extremely good seeing with an adaptive optics system needs long integrations. It is then important to explore the temporal distribution of the fraction of time providing excellent seeing. Methods: Temporal windows of good seeing are created by a simple binary process. Good or bad. Their autocorrelations are corrected for those of the existing data sets, since these are not continuous, being often interrupted by technical problems in addition to the adverse weather gaps. At the end these corrected autocorrelations provide the typical duration of good seeing sequences. This study has to be a little detailed as its results depend on the season, summer or winter. Results: Using a threshold of 0.5 arcsec to define the “good seeing”, three characteristic numbers are found to describe the temporal evolution of the good seeing windows. The first number is the mean duration of an uninterrupted good seeing sequence: it is $\tau0=7.5$ hours at 8 m above the ground (15 hours at 20 m). These sequences are randomly distributed in time, with a negative exponential law of damping time $\tau1=29$ hours (at elevation 8 m and 20 m). The third number is the mean time between two 29 hours episodes. It is T=10 days at 8 m high (5 days at 20 m).
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908 |
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0004-6361 |
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yes |
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Serial |
2505 |
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Author |
Cao A, Romanowicz B, |
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Title |
Constraints on shear wave attenuation in the Earth's inner core from an observation of PKJKP
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Journal Article |
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Year |
2009 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
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Volume |
36 |
Issue |
9 |
Pages |
L09301- |
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Keywords |
inner core, shear wave, quality factor, 3909 Elasticity and anelasticity, 5144 Wave attenuation, 7207 Core, 7203 Body waves, 8115 Core processes, |
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133 |
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1944-8007 |
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yes |
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Serial |
99 |
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