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  • 1
    Monograph available for loan
    Monograph available for loan
    Geodätisch-glaziologische Arbeiten am Hays-Gletscher, Enderby-Land, während der 17. Sowjetischen Antarktisexpedition 1972 (1976)
    Berlin : Nationalkomitee für Geodäsie und Geophysik der Deutschen Demokratischen Republik
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    Call number: Q 2435/37 ; ZSP-319/C-37 ; MOP Per 581(3/37)
    In: Geodätische und Geophysikalische Veröffentlichungen : Reihe 3, Physik der festen Erde, Heft 37
    Type of Medium: Monograph available for loan
    Pages: 191 Seiten , Illustrationen, Karten , 1 Karte
    ISSN: 0435-6187
    Series Statement: Geodätische und Geophysikalische Veröffentlichungen : Reihe 3, Physik der festen Erde 37
    Language: German , English , Russian
    Note: Kartenbeilage unter dem Titel: Berge der Deutsch-Sowjetischen Freundschaft : Antarktika Enderby-Land = Gory Nemecko-Sovetskoj Družby : Antarktika Zemlja Ėnderbi 〈1 : 10 000〉 , Inhaltsverzeichnis Vorwort Rezjume Abstract Teil I: Allgemeiner Teil 1. Arbeitsprogramm und Arbeitsgebiet (S. MEIER) 1.1. Arbeitsprogramm 1.2. Meßmethoden 1.3. Hauptarbeitsgebiet Hays-Gletscher 1.4. Lokale Eiskappe von Molodežnaja 1.5. Vergleichsobjekt Campbell-Gletscher 2. Expeditionsverlauf (K. DRESZLER) 3. Ausrüstung (K. DRESZLER) 4. Klimatische Bedingungen (K. DRESZLER) Teil II: Meßverfahren und -ergebnisse 1. Geodätische und kartographische Grundlagen 1.1. Festpunkte (R. EGER) 1.2. Kartenunterlagen (K. DRESZLER) 2. Geodätisch-glaziologische Traverse 2.1. Erkundung und Signalisierung (S. MEIER} 2.1.1. Verlauf der Traverse 2.1.2. Erkundung, Punktabstand 2.1.3. Signalisierung 2.2. Lagemessung und trigonometrische Höhenübertragung 2.2.1. Streckenmessung 2.2.2. Winkelmessung 2.2.3. Technologischer Ablauf 2.2.4. Auswertung der Messungsergebnisse 2.3. Astronomische Beobachtungen (R. DIETRICH) 2.4. Deformationsraten (S. MEIER) 2.5. Barometrisches Höhenprofil (R. DIETRICH) 2.5.1. Zielstellung 2.5.2. Das Meßverfahren 2.5.3. Diskussion der Fehlereinflüsse 2.5.3.1. Fehler im angenommenen theoretischen Modell 2.5.3.2. Fehler bei der praktischen Messung 2.5.4. Ergebnisse 2.6. Oberflächenneigungen (S. MEIER) 2.7. Photogrammetrische Geländeaufnahmen (K. DRESZLER) 2.7.1. Zunge des Hays-Gletschers 2.7. 2. Einzugsgebiet des Hays-Gletschers 2.8. Glaziologische Arbeiten (S. MEIER) 2.8.1. Ziel der Feldarbeiten 2.8.2. Pegelablesungen 2.8.3. Überblick über Firnaufgrabungen. Firnschichtung 2.8.4. Dichtemessungen 2.8.5. Firntemperaturmessungen 2.8.6. Akkumulationsraten und -profile 2.8.7. Oberflächenbeobachtungen 3. Bewegungsmessungen am Hays- und Campbell-Gletscher 3.1. Photogrammetrjsche Bewegungsmessungen am Hays- und Campbell-Gletscher (K. DRESZLER) 3.2. Auswertung photogrammetrischer Bewegungsmessungen (S. MEIER) 3.2.1. Auswerteziel 3.2.2. Auswertefolge 3.2.3. Besonderheiten 3.2.4. Ergebnisse 3.2.5. Meßfehler 3.3. Trigonometrische Bewegungsmessungen am Campbell-Gletscher (R. EGER) 4. Eisdickenmessungen und Meereslotungen 4.1. Ergebnisse von Radarsondierungen (Messung V. I. CUDAKOV) G. W. TREPOV, Bearbeitung S. MEIER) 4.2. Ergebnisse von Gravimetermessungen (Messung N.D. TRETJAKOV, Bearbeitung C. OELSRER) 4.3. Drahtlotung Spooner-Bucht (S. MEIER) 5. Sonderarbeiten 5.1. Results of meteorological Observations at Camp Abendberg and during the oversnow traverses (E. KAUP) 5.1.1. Meteorological observations at Camp Abendberg 5.1.2. Meteorological Observations during the oversnow traverses 5.2. Küstennahe Ablation und temperierte Firnschicht (S. MEIER) 5.3. Analyse der Sedimentprobe vom Boden der Spooner-Bucht (J. ELIDBERG, F. FALK) 5.4. Refraktionsbeobachtungen (R. EGER) 5.4.1. Beobachtungsprogramm 5.4.2. Beobachtungsergebnisse 5.5. Untersuchungen zur barometrischen Höhenbestimmung von Einzelpunkten (R. DIETRICH) 5.5.1. Einführung 5.5.2. Beobachtungsverfahren und -geräte 5.5.3. Auswertungsmethode 5.5.4. Ergebnisse 5.5.5. Zusammenfassung und Schlußfolgerungen 5.6. Topographische Aufnahme der Berge der Deutsch-Sowjetischen Freundschaft (K. DRESZLER) 5.6.1. Allgemeine Beschreibung 5.6.2. Topographische Aufnahme 5.6.3. Photogrammetrische Auswertung 5.6.4. Kartographische Arbeiten (H. BRUNNER) 5.6.5. Ergebnis Teil IIIa Glaziologische Ergebnisse der Feldarbeiten (S. MEIER) 1. Topographie und Orographie 1.1. Topographie der Eisoberfläche 1.2. Topographie des Felsuntergrundes. Eisdicken 1.3. Abflußgebiete. Gletschergrenzen 1.4. Frontlagen und -höhen 2. Eisbewegung und Deformation 2.1. Frühere Beobachtungen am Hays- und Campbell-Gletscher 2.2. Geschwindigkeitsfeld Hays-Gletscher 2.3. Querkontraktion und Längsdilatation 2.4. Zeitliche Bewegungsschwankungen 2.5. Bewegung der schwimmenden Zunge und Kalbungsrhythmus 2.6. Geschwindigkeit und Kalbungsrhythmus des Campbell-Gletschers 3. Eigenschaften des Oberflächenfirns 3.1. Temperaturen und Temperaturgradienten 3.2. Dichte, Härte, Schichtung 3.3. Vorherrschende Winde und Schneedrift 4. Komponenten des Massenhaushalts 4.1. Schneeakkumulation 1972 4.2. Schneeablation 1972/73 4.3. Eisausstoß 5. Zusammenfassung und Schlußfolgerungen Literatur Anlagen Kartenbeilage , Zusammenfassung in russischer Sprache , Text teilweise in kyrillischer Schrift , Beiträge teilweise in deutscher, teilweise in englischer Sprache
    Location: Upper compact magazine
    Location: AWI Archive
    Location: MOP - must be ordered
    Branch Library: GFZ Library
    Branch Library: AWI Library
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Calculation of rovibronic structures in the lowest nine excited 1Σ+g+1Πg+1Δg states of H2, D2, and T2 (1994)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 101 (1994), S. 7692-7706 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have calculated the rovibronic structures which arise from the simultaneous radial and angular couplings among the lowest nine excited 1Σ+g, 1Πg, and 1Δg states in H2, D2, and T2. Using ab initio potential curves, adiabatic corrections, and nonadiabatic coupling functions wherever possible, we have solved the coupled vibronic equations for all bound states below the 1s+2l dissociation limit up to J=5 in H2 and D2, and up to J=7 in T2. The good agreement of the bulk of the data with spectroscopic results enables us to eliminate spurious assignments in old spectroscopic work (e.g., all old assignments involving the 4s O 1Σ+g state are spurious), and to make numerous new assignments. We present updated tables of spectroscopic term values for H2 and D2. The absolute energy errors of the ab initio Born–Oppenheimer energies around the minima of the potential curves appear to be at most of the order of the radiative energy corrections ((approximately-equal-to)0.1 cm−1) in the states 1σg2sσg E and (1σu)2 F, less than 1 cm−1 in the states 3dσ G, 3s H, and 3dπ I, less than 2 cm−1 in the 4s O state, and approximately 4 cm−1 in the 4dσ P state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.468263
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  • 3
    Electronic Resource
    Electronic Resource
    The EF, GK, and HH¯ 1Σg+ states of hydrogen. Improved ab initio calculation of vibrational states in the adiabatic approximation (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 3292-3299 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Electronic energies and diagonal energy corrections for nuclear motion are calculated for the first three excited 1Σg+ states of H2 at some 70 internuclear separations in the interval R(a.u.) ∈{1,15}. More accurate electronic wave functions comprising, respectively, 129, 118, and 110 terms for the EF, GK, and HH¯ states, and a new method for the evaluation of the relevant integrals are used. The maximum values of the adiabatic energy corrections are found to be larger than the previously published values by 60 cm−1 (EF at R=3.2 a.u.), 55 cm−1 (GK at R=2.85 a.u.), and 38 cm−1 (HH¯ at R=2.95 a.u.), while the electronic energies at the same values of R are now lower by −6, −26, and −7 cm−1. The adiabatic ab initio vibrational energies of the EF, v=0, levels lie 1.9 (H2) and 1.4 cm−1 (HD and D2) above the experimental values. All higher vibrational levels of the three electronic states are appreciably affected by nonadiabatic energy shifts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448228
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  • 4
    Electronic Resource
    Electronic Resource
    Tunneling in the double-minimum EF 1Σ+g state of molecular hydrogen (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 1205-1211 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Motivated by the observations of tunneling resonances in the rotation–vibration structures of the EF 1Σ+g double-minimum states of H2 and D2 we calculate the resonant tunneling frequencies of these states with a semiclassical formula, using accurate ab initio potential functions with appropriate adiabatic and rotational corrections. Good agreement is obtained with the corresponding two-state interaction energies which describe these tunneling resonances and which are evaluated by fitting either the experimental term values or the accurate quantum mechanical energy eigenvalues of the double-minimum oscillator.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453300
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  • 5
    Electronic Resource
    Electronic Resource
    Improved adiabatic corrections for the B 1Σ+u, C 1Πu, and D 1Πu states of the hydrogen molecule and vibrational structures for H2, HD, and D2 (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 2821-2830 
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    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The adiabatic energy corrections of the (2pσ) B 1Σ+u, (2pπ) C 1Πu, and (3pπ) D 1Πu states of H2 are calculated with higher accuracy than accomplished previously for a wide range of internuclear distances. The vibrational structures of these states are calculated for H2, HD, and D2 in the adiabatic approximation. Comparison with experimental term values of H2 and D2 permits one to separate the nonadiabatic energy shifts from the electronic contributions to the remaining energy discrepancies between ab initio theory and experiment. The electronic ab initio errors at and around the equilibrium internuclear distances of the respective states are thus found to be +0.8±0.2 cm−1 in the B state, +0.7±0.2 cm−1 in the C state, and +6.0±0.2 cm−1 in the D state. The adiabatic vibrational structures are also compared with the multichannel quantum defect treatment of nuclear motion in these states by Atabek and Jungen. The present calculation confirms the magnitudes of the so-called specific mass or mass polarization corrections predicted by these authors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451040
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  • 6
    Electronic Resource
    Electronic Resource
    Spectroscopic identification of the lowest rotation–vibration levels of the (2pσ)2 F 1Σ+g state of the D2 molecule (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 2384-2391 
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    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The previously unobserved lowest vibrational levels of the F state of D2 are detected by the identification of F 1Σ+g–B 1Σ+u bands in infrared emission spectra of electric discharges recorded with a Fourier–transform spectrometer. The rotation–vibration structure of the F state, v=0–5, J=0–5, is in good agreement with accurate ab initio calculations which include the effects of tunneling in the double-minimum potential of the EF 1Σ+g state. For the v=J=0 levels of H2 and D2 the absolute energy error of the ab initio calculation extrapolates, for infinite nuclear mass, to an error of the electronic F state energy of +0.7±0.1 cm−1. This is consistent with Jungen's recent accurate spectroscopic determination of the ionization potentials of the excited states of H2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451093
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  • 7
    Electronic Resource
    Electronic Resource
    Spectroscopic identification of the lowest rotation-vibration levels of the (2pσ)2 F 1Σ+g state of the H2 molecule (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 962-968 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Many lines in the infrared emission spectrum of the hydrogen molecule are still unidentified. We report here the identification of a number of such lines corresponding to transitions from the lowest two vibrational levels, v=0 and v=1, of the (2pσ)2 F 1∑+g state of H2. Intensity distributions observed in the bands of the F 1∑+g−B 1∑+u system are consistent with theory. New or more accurate rotational term values are also found for the v=2–4 levels of the F state, and molecular constants are reported. The rotation-vibration structure of the F state (v=0–4; J=0–5) is in good agreement with accurate ab initio calculations which include the effects of tunneling in the double-minimum potential function of the EF state as well as nonadiabatic effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449423
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  • 8
    Electronic Resource
    Electronic Resource
    Spectroscopic identification of rovibronic levels lying above the potential barrier of the EF 1Σ+g double-minimum state of the H2 molecule (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 6908-6914 
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    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Spectroscopic data on the higher vibrational levels of the EF 1Σ+g state of the H2 molecule are scarce. Here we report new identifications of energy levels with J=0–5 which fall into the range between vEF=9 and 20, i.e., the energy region above the potential barrier of the double-minimum EF potential curve. Some previously published line assignments and term values are hereby corrected. The results are mostly based on new assignments of EF 1Σ+g–B 1Σ+u bands in Dieke's hydrogen molecule wavelength tables published in 1972. The newly identified states are of interest in multiphoton spectroscopy and in comparisons of experimental properties with results of ab initio calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453385
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  • 9
    Electronic Resource
    Electronic Resource
    Electronic transition moments for the Lyman and Werner bands of the H2 molecule (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 4720-4721 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report new, more accurate ab initio values for the electronic transition moments of the B–X and C–X transitions of H2 in the internuclear distance range R=[1, 12 a.u.]. Most of the values published by Wolniewicz in 1969 are confirmed within 0.3% such that the resolution of a recently published discrepancy between experimental and theoretical B and C state lifetimes should be sought in the interpretation of the experimental measurements. (AIP)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448684
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  • 10
    Electronic Resource
    Electronic Resource
    Nonadiabatic coupling between the EF+GK+H 1Σ+g, I 1Πg, and J 1Δg states of the hydrogen molecule. Calculation of rovibronic structures in H2, HD, and D2 (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 7461-7478 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The Born–Oppenheimer potential curves of the first two excited 1Σ+g states of H2, EF and GK, exhibit double minima which arise from avoided crossings between the electronic energy curves of the doubly excited 1σ2u configuration and of the 1Σ+g Rydberg states of the 1σg2sσg and 1σg3dσg configurations. The vibrational structures of the adiabatic electronic states are mutually coupled via strongly R-dependent off-diagonal electronic matrix elements of the d/dR and d2/dR2 operators. Furthermore the rotational structures are characterized by strong angular coupling within the complex of 3d-singlet-gerade states G 1Σ+g, I 1Πg, and J 1Δg.We have evaluated the nonadiabatic coupling functions involving the first three excited 1Σ+g states EF, GK, and H, and the I 1Πg and J 1Δg states, and have calculated their nonadiabatic rovibronic structures for the J=0–5 levels of H2, HD, and D2 up to the H(1s)+H(2s,2p) dissociation limit. The simultaneous radial and angular couplings within these five electronic states have been treated using ab initio potential curves, adiabatic corrections, and nonadiabatic coupling functions. The coupled equations have been transformed into a diabatic electronic basis and solved numerically, and the resulting eigenfunctions have been transformed back into the adiabatic basis. Energy eigenvalues, nonadiabatic energy shifts, B values, Landé g factors, band transition moments, Einstein coefficients, and radiative lifetimes have been evaluated and compared with spectroscopic results where possible. The discrepancies between observed and calculated rovibronic term values depend systematically on electronic state, vibrational energy, and isotopic mass, and their magnitudes indicate that the absolute energy errors of the ab initio potential curves amount to less than 1 cm−1 near the minima of the EF 1Σ+g and I 1Πg states, approximately 2 cm−1 in the J 1Δg state, and 5 cm−1 in the H 1Σ+g state. The nonadiabatic ab initio results have already aided spectroscopic identifications of new energy levels and they indicate that several old assignments must be discarded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458181
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