ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
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
    Electronic Resource
    Electronic Resource
    On the free oscillations of a laterally heterogeneous earth model (1972)
    Springer
    Pure and applied geophysics 95 (1972), S. 5-17 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The equations of motion for the free oscillations of a heterogeneous spherical earth model are derived. It is found that the lateral variations of density and elastic moduli couple the odd(even) harmonics of the spheroidal oscillations with themselves as well as with the even (odd) harmonics of the torsional oscillations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878847
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The intermediate-wavelength magnetic anomaly maps of the North Atlantic Ocean derived from satellite and shipborne data (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 123 (1995), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Two intermediate-wavelength magnetic anomaly maps of the North Atlantic Ocean are derived based on satellite and marine magnetic observations. The satellite map is produced from the covariant features of POGO and Magsat dawn and Magsat dusk magnetic anomalies. The marine map is compiled using shipborne data collected since 1965. The two maps are in excellent agreement over well-defined anomalies both in location and amplitude, suggesting that these anomalies are real and reflect magnetization contrasts in the oceanic lithosphere. Both maps show the intermediate-wavelength seafloor-spreading anomalies of the Cretaceous quiet zone of the central North Atlantic Ocean as well as the negative seafloor-spreading anomaly of the Labrador Sea caused by dominantly reversed polarity periods. The Iceland hotspot, Alpha Ridge, Azores High, King's Trough and the Rockall microcontinent have positive anomalies. There is no consistent magnetic signature associated with the ocean-continent boundary, although the deep sedimentary basin of Nova Scotia is delineated by a well-defined negative anomaly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1995.tb06886.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Phase changes and thermal subsidence in intracontinental sedimentary basins (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 106 (1991), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A model of tectonic subsidence is developed to explain the late acceleration of subsidence observed in some intracratonic sedimentary basins. The proposed mechanism combines the effect of thermal contraction of an initially hot lithosphere with the effect of a subcrustal phase transformation that moves under changing pressure and temperature conditions.The subsidence following a sudden change in temperature at the base of the lithosphere is calculated. The calculations show that: (1) phase changes, if present and activated, contribute substantially to the subsidence of sedimentary basins; (2) because the effect of phase change is delayed, subsidence accelerates after a time on the order of 20 Myr; and (3) the duration of the subsidence is on the order of 100 to 150 Myr. During the late stages of subsidence, the phase change is the dominating mechanism.An application to the Michigan basin is presented. The calculated sediment accumulation history fits the record well when the effect of sea-level changes is included in the model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1991.tb06337.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The bulk magnetization contrast across the ocean-continent boundary in the east coast of North America (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 115 (1993), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The intermediate wavelength (∼600∼3000 km) magnetic anomalies of Earth derived from satellite data, indicate that both continental crust and oceanic lithosphere are magnetic. However, no well defined and consistent magnetic anomaly is associated with the ocean-continent boundary, emphasizing that the bulk magnetization (the vertically integrated magnetization) contrast of oceanic lithosphere and continental crust is not appreciable. An upper limit of ∼37000 A is estimated for the bulk magnetization contrast using the low-altitude aeromagnetic and marine magnetic data from across the east coast of North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1993.tb05595.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Phase change and thermal subsidence of the Williston basin (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 116 (1994), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A mechanism of subsidence for the Williston basin is proposed and tested. The mechanism combines cooling and thermal contraction of the lithosphere with a phase transformation in the lower crust. The cooling and the phase boundary movement following a sudden change in the thermal boundary condition at the base of the lithosphere are calculated; isostatic adjustments and sea-level variations are included to determine subsidence and sediment accumulation at the basin's centre, which are compared with the data. The subsidence record could not be explained by temperature boundary conditions. The calculations show that: (1) the heat-flow boundary condition explains the long duration (more than 350 Myrs) of subsidence of the Williston basin and (2) the delay of the phase-change subsidence (about 40 Myrs) explains an acceleration of subsidence in the early stages of the basin's evolution. When isostatic adjustments and the effect of sea-level variations are included, the calculated sediment accumulation history fits well the sediment record of the Williston basin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1994.tb03282.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Numerical modelling of the deformation of the Iranian plateau (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 126 (1996), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The deformation of the Iranian plateau due to the Arabia-Eurasia convergence is studied numerically using the viscous thin-sheet model. The lack of deformation in central Iran and the south Caspian sea is taken into account by including lateral heterogeneities in the lithospheric strength. We present results for models of different rheologies. The results imply that the deformation of the plateau is primarily controlled by the convergence of Arabia and the presence of rigid central Iran and the south Caspian. Deformation reaches to the northern parts at the early stages for many of the rheologies we considered, and crustal thickening takes place over the entire plateau, suggesting that the geometry of the plateau has a dominant effect on the deformation and tends to overshadow the role of rheology. The presence of rigid central Iran can explain the development of the shear zones in eastern and northern Iran. Our results are in good agreement with the observation that in the Zagros the crust is deforming by a creep process, whereas in northern Iran most of the present-day deformation is being accommodated seismically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb04704.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    On the moments of inertia differences of the moon (1977)
    Springer
    Earth, moon and planets 17 (1977), S. 167-176 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract In this paper it is shown that the differences of the moments of inertia of the Moon are, most likely, due to the surface irregularities, the over-all front side mare fillings and the backside topography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00640906
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    The thermal state of the Venusian mantle (1991)
    Springer
    Earth, moon and planets 55 (1991), S. 51-68 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Assuming that the surface topography of the Ovda and Thetis plateaus, and that of the saddle region between Thetis and Atla plateaus, is due to surface subsidence of oceanic-type thermal boundary layers, we calculated the temperature at 200 km beneath the plateaus to be about 1600
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00058996
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    On the thermal history of the moon (1973)
    Springer
    Earth, moon and planets 6 (1973), S. 380-383 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A giant impact causes the lateral variations of the temperature distribution inside the Moon and it provides a thick lithosphere beneath the basin strong enough to support the mascon to be created in this region, and a thin lithosphere beneath the surrounding highland which supplies the lava filling of the basin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00562212
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Density and stress distribution in the moon (1973)
    Springer
    Earth, moon and planets 7 (1973), S. 84-126 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A model is presented for the lateral variations of density within the Moon. The model gives rise to a gravitational potential which is equal to the observed potential at the lunar surface, moreover, it minimizes the total shear-strain energy of the Moon. The model exhibits lateral variations of about ±0.25 g cc−1 within 50 km depth. The variations, however, reduce to ±0.06 and ±0.008 g cc−1 within layers at 50–135 and 135–235 km respectively, and they become negligible below this region. The associated stress differences are found to be about 50 bar within 600 km depth, having their maximum values of about 90 bars at a depth of about 250 km. On the basis of these stress differences a strength of about 100 bar is concluded for the upper 400 km of the lunar interior for the last 3.3 b.y.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00578810
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...