Helmut Echtler - Academia.edu (original) (raw)

Uploads

Papers by Helmut Echtler

Research paper thumbnail of Cipollari etal 2013 GeolSocSpecPubs-Adana-Basin

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Table 2) Age determination of sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Permafrost Dynamics and Degradation in Polar Arctic From Satellite Radar Observations, Yamal Peninsula

Frontiers in Earth Science

We investigate permafrost surface features revealed from satellite radar data in the Siberian arc... more We investigate permafrost surface features revealed from satellite radar data in the Siberian arctic at the Yamal peninsula. Surface dynamics analysis based on SRTM and TanDEM-X DEMs shows up to 2 m net loss of surface relief between 2000 and 2014 indicating a highly dynamic landscape. Surface features for the past 14 years reflect an increase in small stream channels and a number of new lakes that developed, likely caused by permafrost thaw. We used Sentinel-1 SAR imagery to measure permafrost surface changes. Owing to limited observation data we analyzed only 2 years. The InSAR time-series has detected surface displacements in three distinct spatial locations during 2017 and 2018. At these three locations, 60–120 mm/yr rates of seasonal surface permafrost changes are observed. Spatial location of seasonal ground displacements aligns well with lithology. One of them is located on marine sediments and is linked to anthropogenic impact on permafrost stability. Two other areas are loc...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Radar remote sensing for surveying and monitoring of earthquakes and mass movements in Southern Kyrgyzstan

Kyrgyzstan is landlocked mountainous nation of around five million people, which borders China, K... more Kyrgyzstan is landlocked mountainous nation of around five million people, which borders China, Kazakhstan, Tajikistan and Uzbekistan. The total area of high mountainous terrain, alpine meadows and pastures exceeds 70% of the Republic's territory, whereas the greater part of the Kyrgyz Republic is occupied by the Tien-Shan mountains. Kyrgyzstan is a highly active seismic region and has been shaken by numerous significant earthquakes as a consequence of the ongoing collision between the Indian and Eurasian tectonic plates. In the result, the mountainous country is faced with a large variety of natural hazards (mainly earthquakes, large landslides and floods) which frequently lead to the occurrence of natural disaster (e.g., 1994: about 1,000 landslides failed and 115 human fatalities; 2008: Nura earthquake M=6.6, 74 human fatalities and 150 injured, 90 glacial lakes endangered for regularly occurring outburst floods). Under these conditions, there is high demand for efficient and...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Appendix A3) Turbidites of sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Active faulting and northward growth of the Arauco peninsula, South-Central Chile (37°30'S)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seismotectonic segmentation of an active forearc region: Tectonic geomorphology of the Nahuelbuta Range region, Southern Chile (37.5°-38.5°S)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Differential uplift along the northern margin of the Central Anatolian Plateau: inferences from marine terraces

Quaternary Science Reviews, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Late Cenozoic climate indicators in marine sediments of southern Chile: indications for the expansion of the circum-Antarctic cryosphere and impact on strength of the subduction zone

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Anatolian Plateau Uplift Along the Southern Central Margin from Structural Analysis, CRN Dating, and Low-Temperature Thermochronology

Bounding flanks of orogenic plateaus are among the most sensitive features for recording the tect... more Bounding flanks of orogenic plateaus are among the most sensitive features for recording the tectonic drivers for and geomorphic responses to surface uplift. Here, processes from the base of the lithosphere to the surface of the crust are integrated in the geologic record, providing key constraints for deciphering the geodynamic processes that drive orogen growth. The southern margin of the

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Das Forschungsnetzwerk „Water in Central Asia“ (CAWa) – Von Klimawandel bis Wassermanagement

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Multi-phased uplift of the southern margin of the Central Anatolian plateau, Turkey: A record of tectonic and upper mantle processes

Earth and Planetary Science Letters, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Vertical-axis rotations in the Chilean forarc are an expression of back-arc contraction in the Altiplano: evidence from GPS and geological rates

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Plate motions, inter- and intraplate strengths control the phases of Andean subduction orogeny

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Results from the 2009 Geoscientific Expedition to the Inylchek Glacier, Central Tien Shan (Kyrgyzstan)

Austrian Journal of Earth Sciences

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Cretaceous to Cenozoic denudation, tectonics and mass transfer at the South Chilean active continental margin (37°S - 42°S): The apatite fission track perspective

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The deep crust of the Southern Rhine Graben: reflectivity and seismicity as images of dynamic processes

Tectonophysics, 1997

The Rhine Graben, part of the European Cenozoic rift system, deserves special attention because o... more The Rhine Graben, part of the European Cenozoic rift system, deserves special attention because of its location in the foreland of the Alpine orogen. The Phanerozoic evolution of the lithosphere in this region is defined by a set of major geodynamic events ranging from the Variscan orogeny, late-orogenic crustal re-equilibration to the interference of rifting and Alpine orogeny in Tertiary times.The Rhine Graben is one of the most detailedly studied continental grabens. Prospecting for hydrocarbons in its sedimentary fill and intensive pre-site studies for the Continental Deep Drilling Program (KTB) on its eastern crystalline flank (Black Forest) provided a comprehensive set of geoscience data. Seismic investigations ranging from a deep seismic network of near-vertical reflection to concurrent wide-angle refraction experiments were accompanied by seismological and geological surveys. Therefore, a direct observational comparison between the two depth definitions of crustal subdivisio...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Active shortening, surface deformation and Late Neogene coastal geomorphology of the Arauco Region, Chile

Crustal-scale reverse faults - seismic reflection profiles The ENAP offshore seismic reflection l... more Crustal-scale reverse faults - seismic reflection profiles The ENAP offshore seismic reflection lines co ver the continental shelf of the Arauco region. Our interpretation of these lines reveals high-angle blind reverse faults, associated fault-propagation folds, and related syntectonic sequences. The seismic stratigraphy correlated with ENAP boreholes (Mordojovich, 1981) and the geometry of growth strata documents ~8% of late Pliocene to Recent shortening and landward migration of the deformation. Our mapping of the se structures coincides with the coastaJ geomorphology and shows that the Arauco Peninsula is bounded by NW-striking structures to the south, and NE-striking faults to the north. This convergence focuses shortening and surface uplift, ultimately resulting in the emergence of the Arauco Peninsula during the Quaternary.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Appendix A2) Stable oxygen isotope ratios of Globigerina bulloides from sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Crystallization depths of granitoids of South Central Chile estimated by Al-in-hornblende geobarometry: implications for mass transfer processes along the active continental margin

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen

ABSTRACT

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Cipollari etal 2013 GeolSocSpecPubs-Adana-Basin

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Table 2) Age determination of sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Permafrost Dynamics and Degradation in Polar Arctic From Satellite Radar Observations, Yamal Peninsula

Frontiers in Earth Science

We investigate permafrost surface features revealed from satellite radar data in the Siberian arc... more We investigate permafrost surface features revealed from satellite radar data in the Siberian arctic at the Yamal peninsula. Surface dynamics analysis based on SRTM and TanDEM-X DEMs shows up to 2 m net loss of surface relief between 2000 and 2014 indicating a highly dynamic landscape. Surface features for the past 14 years reflect an increase in small stream channels and a number of new lakes that developed, likely caused by permafrost thaw. We used Sentinel-1 SAR imagery to measure permafrost surface changes. Owing to limited observation data we analyzed only 2 years. The InSAR time-series has detected surface displacements in three distinct spatial locations during 2017 and 2018. At these three locations, 60–120 mm/yr rates of seasonal surface permafrost changes are observed. Spatial location of seasonal ground displacements aligns well with lithology. One of them is located on marine sediments and is linked to anthropogenic impact on permafrost stability. Two other areas are loc...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Radar remote sensing for surveying and monitoring of earthquakes and mass movements in Southern Kyrgyzstan

Kyrgyzstan is landlocked mountainous nation of around five million people, which borders China, K... more Kyrgyzstan is landlocked mountainous nation of around five million people, which borders China, Kazakhstan, Tajikistan and Uzbekistan. The total area of high mountainous terrain, alpine meadows and pastures exceeds 70% of the Republic's territory, whereas the greater part of the Kyrgyz Republic is occupied by the Tien-Shan mountains. Kyrgyzstan is a highly active seismic region and has been shaken by numerous significant earthquakes as a consequence of the ongoing collision between the Indian and Eurasian tectonic plates. In the result, the mountainous country is faced with a large variety of natural hazards (mainly earthquakes, large landslides and floods) which frequently lead to the occurrence of natural disaster (e.g., 1994: about 1,000 landslides failed and 115 human fatalities; 2008: Nura earthquake M=6.6, 74 human fatalities and 150 injured, 90 glacial lakes endangered for regularly occurring outburst floods). Under these conditions, there is high demand for efficient and...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Appendix A3) Turbidites of sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Active faulting and northward growth of the Arauco peninsula, South-Central Chile (37°30'S)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seismotectonic segmentation of an active forearc region: Tectonic geomorphology of the Nahuelbuta Range region, Southern Chile (37.5°-38.5°S)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Differential uplift along the northern margin of the Central Anatolian Plateau: inferences from marine terraces

Quaternary Science Reviews, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Late Cenozoic climate indicators in marine sediments of southern Chile: indications for the expansion of the circum-Antarctic cryosphere and impact on strength of the subduction zone

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Anatolian Plateau Uplift Along the Southern Central Margin from Structural Analysis, CRN Dating, and Low-Temperature Thermochronology

Bounding flanks of orogenic plateaus are among the most sensitive features for recording the tect... more Bounding flanks of orogenic plateaus are among the most sensitive features for recording the tectonic drivers for and geomorphic responses to surface uplift. Here, processes from the base of the lithosphere to the surface of the crust are integrated in the geologic record, providing key constraints for deciphering the geodynamic processes that drive orogen growth. The southern margin of the

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Das Forschungsnetzwerk „Water in Central Asia“ (CAWa) – Von Klimawandel bis Wassermanagement

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Multi-phased uplift of the southern margin of the Central Anatolian plateau, Turkey: A record of tectonic and upper mantle processes

Earth and Planetary Science Letters, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Vertical-axis rotations in the Chilean forarc are an expression of back-arc contraction in the Altiplano: evidence from GPS and geological rates

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Plate motions, inter- and intraplate strengths control the phases of Andean subduction orogeny

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Results from the 2009 Geoscientific Expedition to the Inylchek Glacier, Central Tien Shan (Kyrgyzstan)

Austrian Journal of Earth Sciences

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Cretaceous to Cenozoic denudation, tectonics and mass transfer at the South Chilean active continental margin (37°S - 42°S): The apatite fission track perspective

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The deep crust of the Southern Rhine Graben: reflectivity and seismicity as images of dynamic processes

Tectonophysics, 1997

The Rhine Graben, part of the European Cenozoic rift system, deserves special attention because o... more The Rhine Graben, part of the European Cenozoic rift system, deserves special attention because of its location in the foreland of the Alpine orogen. The Phanerozoic evolution of the lithosphere in this region is defined by a set of major geodynamic events ranging from the Variscan orogeny, late-orogenic crustal re-equilibration to the interference of rifting and Alpine orogeny in Tertiary times.The Rhine Graben is one of the most detailedly studied continental grabens. Prospecting for hydrocarbons in its sedimentary fill and intensive pre-site studies for the Continental Deep Drilling Program (KTB) on its eastern crystalline flank (Black Forest) provided a comprehensive set of geoscience data. Seismic investigations ranging from a deep seismic network of near-vertical reflection to concurrent wide-angle refraction experiments were accompanied by seismological and geological surveys. Therefore, a direct observational comparison between the two depth definitions of crustal subdivisio...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Active shortening, surface deformation and Late Neogene coastal geomorphology of the Arauco Region, Chile

Crustal-scale reverse faults - seismic reflection profiles The ENAP offshore seismic reflection l... more Crustal-scale reverse faults - seismic reflection profiles The ENAP offshore seismic reflection lines co ver the continental shelf of the Arauco region. Our interpretation of these lines reveals high-angle blind reverse faults, associated fault-propagation folds, and related syntectonic sequences. The seismic stratigraphy correlated with ENAP boreholes (Mordojovich, 1981) and the geometry of growth strata documents ~8% of late Pliocene to Recent shortening and landward migration of the deformation. Our mapping of the se structures coincides with the coastaJ geomorphology and shows that the Arauco Peninsula is bounded by NW-striking structures to the south, and NE-striking faults to the north. This convergence focuses shortening and surface uplift, ultimately resulting in the emergence of the Arauco Peninsula during the Quaternary.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of (Appendix A2) Stable oxygen isotope ratios of Globigerina bulloides from sediment core SO161/5_50SL in the Peru-Chile Trench

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Crystallization depths of granitoids of South Central Chile estimated by Al-in-hornblende geobarometry: implications for mass transfer processes along the active continental margin

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen

ABSTRACT

Bookmarks Related papers MentionsView impact

Log In