Select All    Deselect All
 |   | 
Details
   print
  Records Links
Author Pepen Supendi, Nicholas Rawlinson, Bambang Setiyo Prayitno, Dimas Sianipar, Andrean Simanjuntak, Sri Widiyantoro, Kadek Hendrawan Palgunadi, Andri Kurniawan, Hasbi Ash Shiddiqi, Andri Dian Nugraha, David P. Sahara, Daryono Daryono, Rahmat Triyono, Suko Prayitno Adi, Dwikorita Karnawati, Gatut Daniarsyad, Suaidi Ahadi, Iman Fatchurochman, Suci Dewi Anugrah, Nova Heryandoko, Ajat Sudrajat doi  openurl
  Title A previously unidentified fault revealed by the February 25, 2022 (Mw 6.1) Pasaman Earthquake, West Sumatra, Indonesia Type Journal
  Year 2023 Publication Physics of the Earth and Planetary Interiors Abbreviated Journal  
  Volume 334 Issue Pages 106973  
  Keywords (down) Earthquake Focal mechanism Kajai Fault Relocation Rupture Stress-change  
  Abstract A destructive earthquake (Mw 6.1) struck Pasaman, West Sumatra, Indonesia, on 25 February 2022, resulting in at least 18 deaths and damage to 1765 buildings. Our relocated foreshock, mainshock, and aftershocks and their source mechanisms reveal a previously unknown ∼20 km long segment of the Sumatran Fault as a result of dextral strike-slip motion (strike N132oE and dip 72oSW) along what we have called the Kajai Fault. The inverted rupture model indicates a single, compact asperity with an approximate depth range of 2–11 km. This asperity extends ∼14 km along strike, and ∼9 km in the down-dip direction. The Coulomb stress change of the mainshock shows that areas to the north and south experienced an increase in stress, which is consistent with the observed aftershock pattern. The nearby Great Sumatran Fault segments (Angkola and Sumpur) experienced a significant increase in stress without any accompanying aftershocks, which likely increases the risk of them rupturing in the future.  
  Programme 133  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-9201 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8528  
Permanent link to this record
 

 
Author Storchak Dmitry A, Kanao Masaki, Delahaye Emily, Harris James, doi  openurl
  Title Long-term accumulation and improvements in seismic event data for the polar regions by the International Seismological Centre Type Journal Article
  Year 2015 Publication Polar Science Abbreviated Journal  
  Volume 9 Issue 1 Pages 5-16  
  Keywords (down) Earthquake detectability, Global earthquake catalogue, International Seismological Centre, Polar regions, Teleseismic events,  
  Abstract Special volume : Recent Advance in Polar Seismology: Global Impact of the International Polar Year  
  Programme 133  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 18739652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6150  
Permanent link to this record
 

 
Author K. Bocchialini, B. Grison, M. Menvielle, A. Chambodut, N. Cornilleau-Wehrlin, D. Fontaine, A. Marchaudon, M. Pick, F. Pitout, B. Schmieder, S. Régnier, I. Zouganelis file  doi
isbn  openurl
  Title 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 Type Book Chapter
  Year 2017 Publication Solar Physics Abbreviated Journal  
  Volume 293 Issue 5 Pages 75  
  Keywords (down) Earth: SSC geoeffectiveness Solar wind: ICME Sun: CME  
  Abstract Taking the 32 storm sudden commencements (SSCs) listed by the International Service of Geomagnetic Indices (ISGI) of the Observatory de l’Ebre during 2002 (solar activity maximum in Cycle 23) as a starting point, we performed a multi-criterion analysis based on observations (propagation time, velocity comparisons, sense of the magnetic field rotation, radio waves) to associate them with solar sources, identified their effects in the interplanetary medium, and looked at the response of the terrestrial ionized and neutral environment. We find that 28 SSCs can be related to 44 coronal mass ejections (CMEs), 15 with a unique CME and 13 with a series of multiple CMEs, among which 19 (68%) involved halo CMEs. Twelve of the 19 fastest CMEs with speeds greater than 1000 km s−1 are halo CMEs. For the 44 CMEs, including 21 halo CMEs, the corresponding X-ray flare classes are: 3 X-class, 19 M-class, and 22 C-class flares. The probability for an SSC to occur is 75% if the CME is a halo CME. Among the 500, or even more, front-side, non-halo CMEs recorded in 2002, only 23 could be the source of an SSC, i.e. 5%. The complex interactions between two (or more) CMEs and the modification of their trajectories have been examined using joint white-light and multiple-wavelength radio observations. The detection of long-lasting type IV bursts observed at metric–hectometric wavelengths is a very useful criterion for the CME–SSC events association. The events associated with the most depressed Dst values are also associated with type IV radio bursts. The four SSCs associated with a single shock at L1 correspond to four radio events exhibiting characteristics different from type IV radio bursts. The solar-wind structures at L1 after the 32 SSCs are 12 magnetic clouds (MCs), 6 interplanetary coronal mass ejections (ICMEs) without an MC structure, 4 miscellaneous structures, which cannot unambiguously be classified as ICMEs, 5 corotating or stream interaction regions (CIRs/SIRs), one CIR caused two SSCs, and 4 shock events; note than one CIR caused two SSCs. The 11 MCs listed in 3 or more MC catalogs covering the year 2002 are associated with SSCs. For the three most intense geomagnetic storms (based on Dst minima) related to MCs, we note two sudden increases of the Dst, at the arrival of the sheath and the arrival of the MC itself. In terms of geoeffectiveness, the relation between the CME speed and the magnetic-storm intensity, as characterized using the Dst magnetic index, is very complex, but generally CMEs with velocities at the Sun larger than 1000 km s−1 have larger probabilities to trigger moderate or intense storms. The most geoeffective events are MCs, since 92% of them trigger moderate or intense storms, followed by ICMEs (33%). At best, CIRs/SIRs only cause weak storms. We show that these geoeffective events (ICMEs or MCs) trigger an increased and combined auroral kilometric radiation (AKR) and non-thermal continuum (NTC) wave activity in the magnetosphere, an enhanced convection in the ionosphere, and a stronger response in the thermosphere. However, this trend does not appear clearly in the coupling functions, which exhibit relatively weak correlations between the solar-wind energy input and the amplitude of various geomagnetic indices, whereas the role of the southward component of the solar-wind magnetic field is confirmed. Some saturation appears for Dst values <−100<−100< -100 nT on the integrated values of the polar and auroral indices.  
  Programme 139,312  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1573-093X ISBN 1573-093X Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7013  
Permanent link to this record
 

 
Author Jonathan Rae, Colin Forsyth, Malcolm Dunlop, Minna Palmroth, Mark Lester, Reiner Friedel, Geoff Reeves, Larry Kepko, Lucille Turc, Clare Watt, Wojciech Hajdas, Theodoros Sarris, Yoshifumi Saito, Ondrej Santolik, Yuri Shprits, Chi Wang, Aurelie Marchaudon, Matthieu Berthomier, Octav Marghitu, Benoit Hubert, Martin Volwerk, Elena A. Kronberg, Ian Mann, Kyle Murphy, David Miles, Zhonghua Yao, Andrew Fazakerley, Jasmine Sandhu, Hayley Allison, Quanqi Shi doi  openurl
  Title What are the fundamental modes of energy transfer and partitioning in the coupled Magnetosphere-Ionosphere system? Type Journal
  Year 2022 Publication Experimental Astronomy Abbreviated Journal  
  Volume 54 Issue 2 Pages 391-426  
  Keywords (down) Earth Magnetosphere-Ionosphere coupling Space missions Voyage 2050  
  Abstract The fundamental processes responsible for energy exchange between large-scale electromagnetic fields and plasma are well understood theoretically, but in practice these theories have not been tested. These processes are ubiquitous in all plasmas, especially at the interface between high and low beta plasmas in planetary magnetospheres and other magnetic environments. Although such boundaries pervade the plasma Universe, the processes responsible for the release of the stored magnetic and thermal plasma energy have not been fully identified and the importance of the relative impact of each process is unknown. Despite advances in understanding energy release through the conversion of magnetic to kinetic energy in magnetic reconnection, how the extreme pressures in the regions between stretched and more relaxed field lines in the transition region are balanced and released through adiabatic convection of plasma and fields is still a mystery. Recent theoretical advances and the predictions of large-scale instabilities must be tested. In essence, the processes responsible remain poorly understood and the problem unresolved. The aim of the White Paper submitted to ESA’s Voyage 2050 call, and the contents of this paper, is to highlight three outstanding open science questions that are of clear international interest: (i) the interplay of local and global plasma physics processes: (ii) the partitioning during energy conversion between electromagnetic and plasma energy: and (iii) what processes drive the coupling between low and high beta plasmas. We present a discussion of the new measurements and technological advances required from current state-of-the-art, and several candidate mission profiles with which these international high-priority science goals could be significantly advanced.  
  Programme 312  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1572-9508 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8600  
Permanent link to this record
 

 
Author Grob M, Schmittbuhl J, Toussaint R, Rivera L, Santucci S, Måløy K J, doi  openurl
  Title Quake Catalogs from an Optical Monitoring of an Interfacial Crack Propagation Type Journal Article
  Year 2009 Publication Pure and Applied Geophysics Abbreviated Journal  
  Volume 166 Issue 5-7 Pages 777 -799  
  Keywords (down) Earth and Environmental Science,  
  Abstract Using an experimental setup which allows to follow optically the propagation of an interfacial crack front in a heterogeneous medium, we show that the fracture front dynamics is governed by local and irregular avalanches with large velocity fluctuations. Events defined as high velocity bursts are ranked in catalogs with analogous characteristics to seismicity catalogs: time of occurence, epicenter location and energy parameter (moment). Despite differences in the fracturing mode (opening for the experiments and shear rupture for earthquakes), in the acquisition mode and in the range of time scales, the distributions of moment and epicenter jumps in the experimental catalogs obey the same scaling laws with exponents similar to the corresponding distributions for earthquakes. The record-breaking event analysis also shows very strong similarities between experimental and real seismicity catalogs. The results suggest that the dynamics of crack propagation is controlled by the elastic interactions between microstructures within the material.
 
  Programme 133  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Birkhäuser Basel Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0033-4553 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 2167  
Permanent link to this record
 

 
Author Ciais P, Rayner P, Chevallier F, Bousquet P, Logan M, Peylin P, Ramonet M, doi  openurl
  Title Atmospheric inversions for estimating CO2 fluxes: methods and perspectives Type Journal Article
  Year 2010 Publication Climatic Change Abbreviated Journal 0165-0009  
  Volume 103 Issue 1 Pages 69-92  
  Keywords (down) Earth and Environmental Science,  
  Abstract We provide a review description of atmospheric inversion methods for the determination of fluxes of long-lived trace gases based on measurements of atmospheric concentration. Emphasis is given to technical aspects of inversion settings, which are crucial to inter-compare and understand inversion results. We briefly sketch the formalism used in such methods, then provide a summary of major currents in research and contemporary problems. Most attention is given to carbon dioxide (CO 2 ) which poses the threat of future climate change. Therefore, there is keen interest in better understanding where and when CO 2 emitted by the combustion of fossil fuels is reabsorbed by land ecosystems and oceans. Using the information contained in concentration fields observed from ground-based networks and from upcoming satellite observations in order to constrain the geographic distribution of surface fluxes is an inverse problem; it consists of finding a set of fluxes that optimally matches the observations available. We review the application of inverse methods to quantify the distribution of the sources and sinks of CO 2 at the surface of the Earth based on global measurements of atmospheric concentration and three-dimensional models of atmospheric transport. We describe the use of topdown atmospheric inversion methods in terms of numerical transport modeling and atmospheric observation networks, and detail some of the currently important issues in assigning uncertainties.  
  Programme 416  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Springer Netherlands Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0165-0009 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3127  
Permanent link to this record
 

 
Author Ricaud P, Genthon C, Durand P, Attié J, Carminati F, Canut G, Vanacker J, Moggio L, Courcoux Y, Pellegrini A, Rose T, doi  openurl
  Title Summer to Winter Diurnal Variabilities of Temperature and Water Vapour in the Lowermost Troposphere as Observed by HAMSTRAD over Dome C, Antarctica Type Journal Article
  Year 2011 Publication Boundary-Layer Meteorology Abbreviated Journal  
  Volume Issue Pages 1-33  
  Keywords (down) Earth and Environmental Science,  
  Abstract  
  Programme 910  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Springer Netherlands Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0006-8314 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3269  
Permanent link to this record
 

 
Author Agosta Cécile, Favier Vincent, Genthon Christophe, Gallée Hubert, Krinner Gerhard, Lenaerts Jan, van den Broeke Michiel, doi  openurl
  Title A 40-year accumulation dataset for Adelie Land, Antarctica and its application for model validation Type Journal Article
  Year 2012 Publication Climate Dynamics Abbreviated Journal 0930-7575  
  Volume 38 Issue 1 Pages 75-86  
  Keywords (down) Earth and Environmental Science,  
  Abstract The GLACIOCLIM-SAMBA (GS) Antarctic accumulation monitoring network, which extends from the coast of Adelie Land to the Antarctic plateau, has been surveyed annually since 2004. The network includes a 156-km stake-line from the coast inland, along which accumulation shows high spatial and interannual variability with a mean value of 362 mm water equivalent a 1 . In this paper, this accumulation is compared with older accumulation reports from between 1971 and 1991. The mean and annual standard deviation and the km-scale spatial pattern of accumulation were seen to be very similar in the older and more recent data. The data did not reveal any significant accumulation trend over the last 40 years. The ECMWF analysis-based forecasts (ERA-40 and ERA-Interim), a stretched-grid global general circulation model (LMDZ4) and three regional circulation models (PMM5, MAR and RACMO2), all with high resolution over Antarctica (27125 km), were tested against the GS reports. They qualitatively reproduced the meso-scale spatial pattern of the annual-mean accumulation except MAR. MAR significantly underestimated mean accumulation, while LMDZ4 and RACMO2 overestimated it. ERA-40 and the regional models that use ERA-40 as lateral boundary condition qualitatively reproduced the chronology of interannual variability but underestimated the magnitude of interannual variations. Two widely used climatologies for Antarctic accumulation agreed well with the mean GS data. The model-based climatology was also able to reproduce the observed spatial pattern. These data thus provide new stringent constraints on models and other large-scale evaluations of the Antarctic accumulation.  
  Programme 411;1013  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Springer Berlin / Heidelberg Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0930-7575 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3347  
Permanent link to this record
 

 
Author Schott Jean-Jacques, Thébault Erwan, doi  isbn
openurl 
  Title Modelling the earth's magnetic field from global to regional scales, in: Geomagnetic Observations and Models, IAGA Special Sopron Book Series Type Book Chapter
  Year 2011 Publication Abbreviated Journal  
  Volume 5 Issue Pages 229-264  
  Keywords (down) Earth and Environmental Science,  
  Abstract In the recent years, a large amount of magnetic vector and scalar data have been measured or made available to scientists. They cover different ranges of altitudes from ground to satellite levels and have high horizontal densities over some geographical areas. Processing these potential field data may require alternatives to the widely used Spherical Harmonics. During the past decades, new techniques have been proposed to model regionally the magnetic measurements. They complement the set of older approaches that were revived and sometimes revised in the meantime. The amount of available techniques is intimidating and one often wonders which method is the most appropriate for what purpose. In this paper, we review several modelling strategies. Starting from the Spherical Harmonics, we discuss methods with global support (wavelets, multi-scale, Slepian functions,) and then bring the focus on regional methods with local support (Rectangular Harmonic Analysis, Cylindrical Harmonic Analysis, Spherical Caps,). We briefly examine the theoretical aspects and properties of each approach. We compare them with the help of a unique set of perfect synthetic data that mimic an ideal spatial distribution at a fixed surface. This helps us to better emphasize the theoretical characteristics of each approach and suggest, when relevant, improvements that would be useful for future practical applications.  
  Programme 139;905  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Springer Netherlands Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN 978-90-481-9858-0 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3579  
Permanent link to this record
 

 
Author Christophe Barbraud doi  isbn
openurl 
  Title Senescence in nature: New insights from a long-term seabird study Type Journal
  Year 2019 Publication Journal of Animal Ecology Abbreviated Journal  
  Volume 88 Issue 7 Pages 968-970  
  Keywords (down) early-life diet mate dynamics Nazca booby senescence sex  
  Abstract In Focus: Tompkins, E. M., & Anderson, D. J. (2019). Sex-specific patterns of senescencein Nazca boobies linked to mating system. Journal of Animal Ecology, 88, 986-1000. https://doi.org/10.1111/1365-2656.12944. Sex-specific differences in senescence and environmental impacts on senescence in both sexes remain poorly understood. Tompkins and Anderson (2019) studied senescence in survival (hereafter called actuarial senescence) and in reproduction (hereafter called reproductive senescence) in Nazca boobies using 33 years of individual-based capture–recapture data. Senescence patterns (life-history traits, ages at onset, senescence rates) differed between sexes and were affected by environmental conditions (food availability) faced by individuals during their younger ages. Patterns of sex differences in senescence may result from the mating dynamics due to the population's male-biased sex ratio.  
  Programme 109  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1365-2656 ISBN 1365-2656 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7634  
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print