PL
 |
EN
Ten serwis zostanie wyłączony 2025-02-11.
Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 22

Liczba wyników na stronie
first rewind previous Strona / 2 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 2 next fast forward last
1
Miedzynarodowy eksperyment sejsmiczny CELEBRATION 2000
100%
Guterch A.
|
|
tom 11
143-145
2
Content available remote Fizyka związana z Ziemią
100%
Guterch A.
|
|
tom T. 51, z. dodatk
77-79
3
Content available remote 4. Międzynarodowy Rok Polarny 2007-2008 : główne przesłania, cele i zadania
100%
Guterch A.
Przegląd Geofizyczny
|
2005
|
tom Z. 3-4
163-175
4
Content available remote Badania struktury skorupy ziemskiej na obszarze Europy Centralnej, ze szczególnym uwzględnieniem Transeuropejskiej Strefy Szwu, metodami głębokich profilowań sejsmicznych
100%
Guterch A.
|
2012
|
tom R. 15, Nr 9 (173)
4--9
EN
The complex tectonic history of Central Europe (Fig. 1a) reflects the break-up of a Neoproterozoic supercontinet(s) (Rodinia/Pannotia) to form the fragment Baltica and the subsequent growth of continental Europe beginning with the Caledonian orogeny. Caledonian and younger Variscan orogenesis involved accretion of Laurentian and Gondwanan terranes to the riftet margin of Baltica. (East European craton, EEC) during the Paleozoic. From Central Poland northward, the region also experienced volcanic activity during the Permian and tectonic inversion during the Alpine orogeny, which in the south continues today. The Trans-European Suture Zone (TESZ) is a term used to refer to the suite of sutures and terranes that formed adjacent to the rifted margin of Baltica, and these features extend from the British Isles to the Black Sea region (Fig. 1a and 2). Understanding the structure and evolution of the TESZ region is one of the key tectonic challenges in Europe north of the Alps. The TESZ is far more complex than a single suture but in a broad sense is the boundary between the accreted terranes and Baltica. The TESZ includes the Teisseyre-Tornquist Zone (TTZ), which has several definitions. Here, we will use the term TTZ to refer to a structural zone associated with the southwestern edge of the EEC. Beginning in 1997, Central Europe, between the Baltic and Adriatic Seas, has been covered by an unprecedented network of seismic refraction experiments (Fig. 1b). These experiments - POLONAISE’97, CELEBRATION 2000, ALP 2002, and SUDETES 2003 - have only be possible due to a massive international cooperative effort. International Consortium consisted of 35 institutions from 16 countries in Europe and North America - Austria, Belarus, Canada, Croatia, Czech Republic, Denmark, Finland, Germany, Hungary, Lithuania, Poland, Russia, Slovakia, Slovenia, Turkey and the United States. The majority of the recording instruments was provided by the IRIS/ PASCAL Instrument Center and the University of Texas at El Paso (USA), the Geological Survey of Canada and other countries. For example, in the CELEBRATION experiment, the total number was 1230 stations ands 147 shot points located along seismic lines of a total length of about 9000 km. A large number of seismic sources and stations in all experiments means that besides 2 - D approach along profiles (Fig. 3 and 4), also 3 - D approach (Fig. 5 and 6) could be implemented in data interpretation. Total length of seismic profiles in all experiments is about 20 000 km (Fig. 1b).
5
Content available remote New deep seismic studies of the lithosphere in Central Europe : POLONAISE'97 and CELEBRATION 2000 seismic experiments
63%
Guterch A. , Grad M.
|
|
tom nr 396
55-61
6
Seismic crustal structure of the sedimentary basin of Central Spitsbergen (discussion of results)
63%
Guterch A. , Perchuc E.
Polish Polar Research
|
1990
|
tom 11
|
nr 3-4
7
Lithospheric structure of the Trans-European Suture Zone in Poland from POLONAISE'97 experiment
63%
Guterch A. , Grad M.
Acta Geophysica Polonica
|
2002
|
tom Vol. 50, nr 4
499-503
8
Content available Lithospheric structure of the TESZ in Poland based on modern seismic experiments
63%
Guterch A. , Grad M.
|
|
tom Vol. 50, No. 1
23-32
EN
This paper presents the results of seismic investigations on the structure of the lithosphere in the area of the Trans-European Suture Zone (TESZ) in Poland that is located between the southwestern margin of the East European Craton (EEC) to the north-east, the West and Central European Palaeozoic Platform (PP) to the south-west and the Carpathians to the south. Based on results of the modern POLONAISE’97 and CELEBRATION 2000 projects, as well as older profiles, models are presented for the configuration and extent of different crustal types. In the investigated area, the EEC has a relatively uniform crustal thickness of 40 to 50 km with its three-layered crystalline crust displaying P-wave velocities of 6.1–6.4, 6.5–6.8 and 6.9–7.2 km/s in the upper, middle and lower parts, respectively. The Variscan consolidated crust is covered by 1–2 km thick sediments and consists of two layers with velocities of 5.6–6.3 and 6.5–6.65 km/s. In the Carpathians, sediments reaching to depths of some 20 km and are characterized by velocities of <5.6–5.8 km/s, whilst the underlying two-layered crystalline crust displays velocities of 6.0–6.2 and 6.5–6.9 km/s. The crust of the TESZ can be divided into the Małopolska, Kuiavia and Pomerania blocks that are overlain by up to 9–12 km thick sediments having velocities <5.4 km/s. In the area of the TESZ, the upper part of the consolidated crust has to depths of 15–20 kmrelatively low velocities of <6.0 km/s and is commonly regarded as consisting of deformed and slightlymetamorphosed Early Palaeozoic sedimentary and volcanic series. In this area the middle and lower crust are characterized by velocities in the range of 6.3–6.6 km/s and 6.8–7.2 km/s, respectively, that are comparable to the EEC. Based on the dense network of seismic profiles the map of the depth toMoho is given for the area of Poland. Uppermost mantle reflectors occur about 10 to 15 km below the Moho whereas the deepest reflectors are recorded at depths of 90 km. Future investigations ought to aim at an integrated geological-geophysical program, including deep near-verical reflection-seismic profiling and ultimately the drilling of deep calibration boreholes.
9
2-D seismic models of the lithosphere in the area of the Bransfield Strait, West Antarctica
51%
Grad M. , Guterch A. , Janik T. , Sroda P.
|
|
nr 2
123-151
10
Content available Seismic structure of the lithosphere between the East European Craton and the Carpathians from the net of CELEBRATION 2000 profiles in SE Poland
51%
Janik T. , Grad M. , Guterch A.
|
2009
|
tom Vol. 53, No 1
141-158
EN
During the CELEBRATION 2000 experiment, the area of SE Poland was investigated by relatively dense system of deep seismic sounding profiles. Apart from five main profiles CEL01–CEL05, eight additional profiles were executed between the edge of the East European Craton and the Carphatians: CEL06, CEL11, CEL12, CEL13, CEL14, CEL21, CEL22 and CEL23. In this paper, we present results of modelling of refracted and reflected waves with use of a 2D ray tracing technique. All 13 profiles were jointly inter reted with verification of models at crossing points, and a quasi 3D model of the crust and upper mantle was developed. The obtained P-wave velocity models of the crust and uppermost mantle are very complex and show a differentiation of the seismic structure for tectonic units in SE Poland. The depth of the Moho discontinuity in the investigated area changes from about 30 to about 52 km. As a summary of all seismic models, the Moho depth map for SE Poland is presented, as well as a map of the extent of the most characteristic crustal elements in the area: a high velocity body in the upper crust, division into two- and three-layer consolidated crust, ranges of very deep layers with low velocities in the upper and middle crust, aproximate ranges of detected velocity anisotropy in the upper/middle crust, ranges of the high-velocity lower crust and high-velocity uppermost mantle. Both maps are com pared with the main struc tural el e ments from tec tonic map. This could form the base for a new geotectonic in ter pre ta tion of this com plex area.
11
Content available Monitoring zagrożenia sejsmicznego obszaru Polski
51%
Trojanowski J. , Plesiewicz B. , Guterch A. , Grad M.
|
|
tom Vol. 57, nr 2
133-137
12
Content available remote Huge contrasts of the lithospheric structure revealed by new generation seismic experiments in Central Europe
51%
Guterch A. , Grad M. , Keller R. G.
Przegląd Geologiczny
|
2004
|
tom Vol. 52, nr 8/2
753-760
EN
Beginning in 1997, Central Europe, between the Baltic and Adriatic Seas, has been covered by an unprecedented network of seismic refraction experiments (Fig.1A). These experiments — POLONAISE’97, CELEBRATION 2000, ALP 2002, and SUDETES 2003—have only been possible due to a massive international cooperative effort. International Consortium consisted of more than 30 institutions from 16 countries in Europe and North America—Austria, Belarus, Canada, Croatia, Czech Republic, Denmark, Finland, Germany, Hungary, Lithuania, Poland, Russia, Slovakia, Slovenia, Turkey, and the United States. The majority of the recording instruments was provided by the IRIS /PASCAL Instrument Center and the University of Texas at El Paso (USA), the Geological Survey of Canada, and other countries. For example, in the CELEBRATION experiment, the total number was 1230 stations and 147 shot points located along seismic lines of a total length of about 9000 km. A large number of seismic sources and stations in all experiments means that besides 2-D approach along profiles, also 3-D approach could be implemented in data interpretation. Total length of seismic profiles in all experiments is about 20,000 km.
13
Content available remote O możliwości występowania złóż gazu ziemnego głęboko pod Karpatami (artykuł dyskusyjny)
51%
Jankowski J. , Guterch A. , Jóźwiak W. , Karnkowski P.
Nafta-Gaz
|
2008
|
tom R. 64, nr 4
227-230
PL
Wykonane w ostatnich latach głębokie sondowania sejsmiczne potwierdziły, że pod Karpatami istnieje głęboki, o miąższości rzędu 20 km, basen osadowy. Takie stwierdzenie oparte na interpretacji sondowań geomagnetycznych opublikowane zostało już 25 lat temu. Co więcej, wykazano, że w dolnej części basenu istnieje kompleks skał dobrze przewodzących. Ostatnie interpretacje potwierdzają, naszym zdaniem, że za dobre przewodnictwo odpowiedzialne są mineralizowane wody, co uzasadnia przypuszczenie o występowaniu tam skał porowatych. Jak wiadomo, lokalnie w takich porowatych skałach mogą występować złoża gazu ziemnego. W ostatnim dwudziestoleciu w wielu rejonach świata, w szczególności w Stanach Zjednoczonych, z głębokich odwiertów eksploatuje się przemysłowo gaz, a prognozy mówią, że od lat pięćdziesiątych naszego wieku będzie on podstawowym źródłem energii. Warto więc zwrócić uwagę na dalsze poszukiwania gazu ziemnego w Karpatach, gdzie jego obecność wydaje się bardzo prawdopodobna.
EN
The deep seismic sounding performed in recent years corroborated the presence of about 20-km thick sedimentary basin underneath the Carpathians. Its existence was already postulated 25 years ago on the basis of interpretation of geomagnetic sounding. What is more, in the lower part of the basin there is a complex of well-conducting rocks. The recent interpretations confirm, in our opinion, that the good conductivity is due to mineralized waters, which suggests that the rocks are porous. Locally, such porous rocks may contain natural gas deposits. In the last twenty years, natural gas has been industrially exploited from deep boreholes in many areas of the world, notably in the United States. The forecasts are that since the 2050s this will be the main energy source. It is therefore worthwhile to draw the attention to further search for natural gas in the Carpathians, where its presence seems very likely.
14
Crustal structure of North-Western Spitsbergen from DSS measurements
51%
Czuba W. , Grad M. , Guterch A.
Polish Polar Research
|
1999
|
tom 20
|
nr 2
131-148
15
Biale krance Ziemi
51%
Guterch A. , Gazdzicki A. , Glowacki P. , Grad M.
|
2005
|
nr 1
16-19
16
Krzysztof Kwarecki [1938-2002]
50%
Guterch A.
|
|
nr 1
17
Lithospheric transect Antarctic Peninsula - South Shetland Islands, West Antarctica
45%
Birkenmajer K. , Guterch A. , Grad M. , Janik T. , Perchuc E.
Polish Polar Research
|
1990
|
tom 11
|
nr 3-4
18
Content available Lithospheric structure of the western part of the East European Craton investigated by deep seismic profiles
45%
Grad M. , Janik T. , Guterch A. , Środa P. , Czuba W.
|
|
tom Vol. 50, No. 1
9-22
EN
The Palaeoproterozoic collision of Archaean Fennoscandia, Volgo-Uralia and Sarmatia, viewed as a large composite of terranes, each with an independent history during Archaean and Early Proterozoic time, formed the East European Craton. This paper summarizes the results of deep seismic sounding investigations of the lithospheric structure of the southwestern part of the East European Craton. On the basis of the modern EUROBRIDGE’94–97, POLONAISE’97 and CELEBRATION 2000 projects, as well as of data from the Coast Profile and from reinterpreted profiles VIII and XXIV, the main tectonic units of Fennoscandia and Sarmatia are characterized. The crustal thickness in the whole area investigated is relatively uniform, being between 40 and 50 km (maximum about 55 km). For Fennoscandia, the crystalline crust of the craton can be generally divided into three parts, while in Sarmatia the transition between the middle and lower crust is smooth. For both areas, relatively high P-wave velocities ( 7.0 km/s) were observed in the lower crust. Relatively high seismic velocities of the sub-Moho mantle (~8.2–8.3 km/s) were observed along most of the profiles. The uppermost mantle reflectors often occur ca. 10 to 15 km below the Moho. Finally, we show the variability in physical properties for the major geological domains of Fennoscandia and Sarmatia, which were crossed by the network of our profiles.
19
Content available remote New international seismic project CELEBRATION 2000 in the Central Europe between East European Craton and Pannonian Basin cross Carpathians
38%
Guterch A. , Grad M. , Keller G. R. , Thybo H. , Vozar J. , Hegedus E. , Hajnal Z.
Biuletyn Państwowego Instytutu Geologicznego
|
1999
|
tom nr 387
102--104
20
3D seismic model of the uppermost crust of the Admiralty Bay area, King George Island, West Antarctica
38%
Majdanski M. , Sroda P. , Malinowski M. , Czuba W. , Grad M. , Guterch A. , Hegedus E.
|
2008
|
tom 29
|
nr 4
303-318
first rewind previous Strona / 2 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.