A5007742649- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Ionosphere and magnetosphere dynamics
- Geological and Geophysical Studies
- Inertial Sensor and Navigation
- earthquake and tectonic studies
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Oceanographic and Atmospheric Processes
- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Geomagnetism and Paleomagnetism Studies
- High-pressure geophysics and materials
- Spacecraft Design and Technology
- Ocean Waves and Remote Sensing
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Reservoir Engineering and Simulation Methods
- Soil Moisture and Remote Sensing
- Marine and environmental studies
- Space Satellite Systems and Control
- Computational Physics and Python Applications
- Solar and Space Plasma Dynamics
- Underwater Acoustics Research
GFZ Helmholtz Centre for Geosciences
2016-2025
Istituto Nazionale di Fisica Nucleare, Galileo Galilei Institute for Theoretical Physics
2016
University of Potsdam
2013
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
1994-2011
Centre de Géosciences
2009
Uppsala University
1995
Abstract. There are a large number of geophysical processes affecting sea level dynamics and coastal erosion in the Baltic Sea region. These operate on range spatial temporal scales observed many other regions worldwide. This, along with outstanding long data records, makes unique laboratory for advancing our knowledge interactions between steering climate change context. Processes contributing to include still ongoing viscoelastic response Earth last deglaciation, contributions from global...
Sea level rise (SLR) is among the most pressing challenges for urban coastal areas. While geocentric (eustatic) SLR receives widespread attention in politics and media, relative at coast, mainly caused by land subsidence, still comparatively under-researched despite much higher rates. This paper introduces a combined natural social science study to bring subsidence more forefront of hazard research. We use data from radar altimetry, GNSS controlled tide gauge stations, InSAR mapping...
Abstract The potential temporal shifts in the integrated water vapor (IWV) time series obtained from reprocessed data acquired global navigation satellite systems (GNSS) were comprehensively investigated. A statistical test, penalized maximal t test modified to account for first-order autoregressive noise (PMTred), was used identify possible mean (changepoints) of difference between GPS IWV and European Centre Medium-Range Weather Forecasts (ECMWF) interim reanalysis (ERA-Interim) data....
The complex tectonic interplay between the Central Asian Southwest Tien Shan and north advancing Pamir as well role of Frontal Thrust (PFT) separating these two orogens along intervening Alai Valley is yet unclear. In this paper we present data newly installed Western GPS profile (WAGP), capturing deformation signal both mountain ranges. 20 km long WAGP records a maximum displacement rate 9.3 ± 0.8 mm yr−1. lion's share (6.0 yr−1) accommodated stations located directly south PFT in 5...
Abstract. Glacier mass loss is among the clearest indicators of atmospheric warming. The observation these changes one major objectives international climate monitoring strategy developed by Global Climate Observing System (GCOS). Long-term glacier balance measurements are furthermore basis for calibrating and validating models simulating future runoff glacierised catchments. This essential Central Asia, which driest continental regions Northern Hemisphere. In highly populated regions, water...
The international expedition ARCTIC'91 has yielded new results concerning the evolution of Eurasian Basin. Seismic reflection data were acquired with a total line length 1500km in signals imaged whole sedimentary cover d
Abstract We investigate the sea level rise in Indonesia during period 1993–2011 using satellite altimetry and tide gauge data. Satellite indicates a positive with mean of 4 mm/yr, which is higher than global averaged rise. At four tide-gauge stations difference trends from co-located greater 3 mm/yr. Land subsidence found Jakarta, Surabaya Benoa. Enggano Tanjung Lesung vertical rates correspond GPS-derived between 2007 2009, indicating land at first station. Keywords: Sea changeland...
The Pamir orogen, Central Asia, is the result of ongoing northward advance Indian continent causing shortening inside Asia. Geodetic and seismic data place most intense deformation along northern rim Pamir, but recent 7 December 2015, M w 7.2 Sarez earthquake occurred in Pamir's interior. We present a distributed slip model this using coseismic geodetic postseismic field observations. ruptured an ∼80 km long, subvertical, sinistral fault consisting three right‐stepping segments from surface...
Drawing on Jakarta, Metro Manila and Singapore as case studies, we explore the paradox of slow political action in addressing subsiding land, particularly along high-density urban coastlines with empirical insights from coastal geography, geodesy analysis, geology, planning. In framing land subsidence a classic ‘wicked’ policy problem, also hybrid geological anthropogenic phenomenon that is unevenly experienced across contexts, paper uses three-step analysis. First, satellite-derived InSAR...
Abstract The 2015 M7.2 Sarez (Pamir) earthquake occurred at the north‐west margin of Tibetan Plateau. We use Sentinel‐1 and ALOS‐2 Synthetic Aperture Radar Global Navigation Satellite System data to investigate coseismic postseismic deformation due earthquake. Kinematic inversions show that ruptured a ∼80 km long, sub‐vertical fault producing maximum surface offset 3–4 m on south‐west central segments. In contrast, largest displacements are observed north‐east end rupture, predominantly west...
The Baltic Sea is an intercontinental marginal sea that vertically stratified with a strong halocline isolating the saline bottom layer from brackish surface layer. eutrophic and abiotic zones lacking oxygen are common in deeper regions. While freshwater constantly flowing into North Sea, oxygen-rich waters can only occasionally enter following special sequence of transient weather conditions. These so-called Major Inflow events be monitored via level gradients between Kattegat western Sea....
Abstract Population growth, climate change, and a lack of infrastructure have contributed to an increase in water demand groundwater exploitation urban rural Afghanistan, resulting significant ground subsidence. Based on 7‐year‐long Sentinel‐1 radar‐interferometric time‐series (2015–2022), we assess country‐wide subsidence rates. Of particular focus are Kabul the growing agricultural sector Ghazni. In Kabul, compare spatiotemporal patterns table heights precipitation amounts. Ghazni,...
The region around Lake Issyk-Kul in the Tian Shan Mountains Kyrgyzstan is densely observed with in-situ monitoring stations and used to test validate satellite observations. Although lies at 1600 m elevation, it does not freeze over winter months. hydrology of dominated by storage several large medium-sized endorheic lakes (e.g., Balkhash), artificial reservoirs Kapshagay Reservoir), snow cover during In addition, melting glaciers play a significant role region’s...
Population growth, climate change, and a lack of infrastructure have increased water demand groundwater exploitation in urban rural Afghanistan, resulting significant ground subsidence various regions. Using Sentinel-1 radar-interferometric time-series data based on over 7-years (2015-2022), we assess country-wide Afghan rates for levels, precipitation, changes irrigation practices. Urban Kabul city the growing agricultural sector Ghazni provinces are particular focus. In city,...
The Baltic Sea is an intra-continental marginal sea that vertically stratified with a strong halocline isolating the saline bottom layer from brackish surface layer. eutrophic, and abiotic zones lacking oxygen are common in deeper regions. While freshwater constantly flowing into North Sea, oxygen-rich waters can only occasionally enter following special sequence of transient weather conditions. These so-called Major Inflow events be monitored via level gradients between Kattegat Western...
New, precise, consistent orbits (VER11) of altimetry satellites ERS-1, ERS-2, TOPEX/Poseidon, Envisat, Jason-1, and Jason-2 have been recently derived at the GFZ German Research Centre for Geosciences in extended ITRF2008 terrestrial reference frame using improved models covering time span 1991-2015. These show quality, as compared with previous (VER6) 2013. Improved macromodels reduce root mean square (RMS) fits satellite laser ranging (SLR) observations by 2.6%, 6.9%, 7% Jason-2,...
Abstract. Long-term monitoring of water resources and climate parameters at the scale river basins requires networks continuously operated in-situ stations. Since 2009, GFZ CAIAG, in cooperation with National Hydrometeorological Services (NHMS) Central Asia, are establishing such a regional network Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, lately Afghanistan to collect observations meteorological hydrological deliver them end-users for operational tasks scientific studies. The newly...
We present ground deformations in response to water level variations at the Toktogul Reservoir, located Kyrgyzstan, Central Asia. Ground were measured by Envisat Advanced Synthetic Aperture Radar (ASAR) and Sentinel-1 Differential Interferometric (DInSAR) imagery covering time periods 2004–2009 2014–2016, respectively. The net reservoir level, as satellite radar altimetry, decreased approximately 60 m (∼13.5 km3) from 2004–2009, whereas, for increased 51 (∼11.2 km3). individual Small...