ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Publication Date: 2015-11-27
    Description: The increasingly dense coverage of Europe with broad-band seismic stations makes it possible to image its lithospheric structure in great detail, provided that structural information can be extracted effectively from the very large volumes of data. We develop an automated technique for the measurement of interstation phase velocities of (earthquake-excited) fundamental-mode surface waves in very broad period ranges. We then apply the technique to all available broad-band data from permanent and temporary networks across Europe. In a new implementation of the classical two-station method, Rayleigh and Love dispersion curves are determined by cross-correlation of seismograms from a pair of stations. An elaborate filtering and windowing scheme is employed to enhance the target signal and makes possible a significantly broader frequency band of the measurements, compared to previous implementations of the method. The selection of acceptable phase-velocity measurements for each event is performed in the frequency domain, based on a number of fine-tuned quality criteria including a smoothness requirement. Between 5 and 3000 single-event dispersion measurements are averaged per interstation path in order to obtain robust, broad-band dispersion curves with error estimates. In total, around 63,000 Rayleigh- and 27,500 Love-wave dispersion curves between 10 and 350 s have been determined, with standard deviations lower than 2 per cent and standard errors lower than 0.5 per cent. Comparisons of phase-velocity measurements using events at opposite backazimuths and the examination of the variance of the phase-velocity curves are parts of the quality control. With the automated procedure, large data sets can be consistently and repeatedly measured using varying selection parameters. Comparison of average interstation dispersion curves obtained with different degrees of smoothness shows that rough perturbations do not systematically bias the average dispersion measurement. They can, therefore, be treated as random but they do need to be removed in order to reduce random errors of the measurements. Using our large new data set, we construct phase-velocity maps for central and northern Europe. According to checkerboard tests, the lateral resolution in central Europe is ≤150 km. Comparison of regional surface-wave tomography with independent data on sediment thickness in North-German Basin and Polish Trough confirms the high-resolution potential of our phase-velocity measurements. At longer periods, the structure of the lithosphere and asthenosphere around the Trans-European Suture Zone (TESZ) is seen clearly. The region of the Tornquist-Teisseyre-Zone in the southeast is associated with a stronger lateral contrast in lithospheric thickness, across the TESZ compared to the region across the Sorgenfrei-Tornquist-Zone in the northwest.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The H3+ molecular ion plays a fundamental role in interstellar chemistry, as it initiates a network of chemical reactions that produce many molecules. In dense interstellar clouds, the H3+ abundance is understood using a simple ...
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Studia geophysica et geodaetica 26 (1982), S. 215-230 
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Резюме Дaн mеореmuческuŭ выво¶rt; ¶rt;еформaцuŭ уровенных nоверхносmеŭ u земноŭ коры, вызвaнных вaрuaцuямu векmорa у ловоŭ скоросmu врaшенuя Землu. Рaссмamрuвaюmся оm¶rt;ельно зонaльные, mессерaльные u секmорuaльные члены эmuх ¶rt;еформaцuŭ u ¶rt;aнa uх колuчесmвеннaя оценкa; в некоmорых случaях эmu ¶rt;еформaцuu мо уm ¶rt;осmu amь 10% оm ¶rt;еформaцuŭ, вызвaнных земнымu nрuлuвaмu оm Луны.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Studia geophysica et geodaetica 32 (1988), S. 331-332 
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Summary Using the least-squares method the constants of both gravity meters — seismometers — were derived from the amplitude responses, observed under vertical motion on a vibrating table in the 0.3–30 s range. The values of the seismogram amplitudes, above which seismic waves cause an observable displacement of the gravity meter reading beam, were determined for the SKD and Press-Ewing station seismographs.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Резюме Рaссмamрuвaеmся зa¶rt;aчa о ¶rt;вuженuях в ¶rt;вухслоŭноŭ ньюmоновскоŭ жu¶rt;косmu, вознuкaющuх nо¶rt; влuянuем верmuкaльных ¶rt;вuженuŭ нa нuжнеŭ рaнuце нuжне о слоя. Нa основaнuu срaвненuя mеореmuческuх резульmamов с ¶rt;aннымu о современных верmuкaльных ¶rt;вuженuях ¶rt;елaюmся некоmорые кaчесmвенные выво¶rt;ы о ¶rt;еформaцuонных своŭсmвaх лumосферы.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Резюме Вычuсляеmся nрецессuонно-нуmaцuонныŭ моменm nрuлuвообрaзующuх сuл ом Луны в зaвuсuмосmu оm nосmоянных Сmоксa Землu. Выясняеmся оmношенuе uн¶rt;uвu¶rt;уaльных членов эmого моменma к nрuлuвообрaзующеŭ сuловоŭ функцuu.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Резюме Прuменяюmся меmо¶rt;uческuе nо¶rt;хо¶rt;ы чuсленного мо¶rt;елuровaнuя элекmромaгнumных nолеŭ в ¶rt;вумерныхгорuзонmaльно нео¶rt;норо¶rt;ных сре¶rt;aх u ¶rt;вумерноŭ чuсленноŭ uнверсuu ¶rt;ля оценкu u уmочненuягеоэлекmрuческоŭ сumуaцuu в¶rt;оль nрофuля Освеmuмaны-Брезовa nо¶rt; Брa¶rt;лом в юго-зana¶rt;ноŭ чaсmu зоны конmaкma меж¶rt;у Чешскuм мaссuвом к Кaрnamскоŭ сuсmемоŭ. Геоэлекmрuческaя uнmерnреmaцuя nозволяеm нa основе рaсnре¶rt;еленuя элекmроnрово¶rt;носmu внуmрuгеоэлекmрuческого рaзрезa nрuблuзumельно оnре¶rt;елumьгрaнuцы основных сmрукmурных е¶rt;uнuц uзучaемоŭ зоны.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Description / Table of Contents: Summary Runcorn's equations, which can be used to compute the stresses caused by convection flows from the outer gravity field, were transformed so that gravity anomalies or geoid heights can be employed as input data.
    Notes: Резюме Урaвненuя Рaнкорнa, коmорые оnре¶rt;еляюm uз внешнего nоля сuлы mяжесmu Землu нanряженuя, вызвaнные конвекцuоннымu nоmокaмu, былu mрaнсформuровaны maк, чmобы было возможно uсnользовamь в вu¶rt;е вво¶rt;ных ¶rt;aнных, aномaлuu сuлы mяжесmu uлu высоmыгеоu¶rt;a.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-1626
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Description / Table of Contents: Summary The complete two-dimensional theory of stresses and displacements in the loaded elastic floating lithosphere is presented. Analytical expressions are derived describing these quantittes as functions of the physical and geometrical parameters of the model. It is shown that horizontal stresses σxx may considerably exceed the surface load and that values of σxx≈200 MPa can be generated under certain conditions. Numerical calculations are carried out for geophysically acceptable input parameters.
    Notes: Резюме Дaёmся nолнaя ¶rt;вумернaя mеорuя нanряженuŭ u смещенuŭ в нa руженноŭ уnру оŭ nлaвaющеŭ лumосфере. Выве¶rt;ены aнaлumuческuе вырaженuя, оnuсывaющuе эmu велuчuны кaк функцuu оm фuзuческuх u еомеmрuческuх naрaмеmров мо¶rt;елu. Покa aно, чmо орuзонmaльные нanряженuя мо уm знaчumельно nревысumь нanряженuя nоверхносmноŭ нa рузкu u в оm¶rt;ельных случaях мо уm быmь nоря¶rt;кa 200 МПa. Выnолнены чuсленные рaсчёmы ¶rt;ля еофuзuческu ¶rt;оnусmuмых вхо¶rt;ных naрaмеmров.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...