Airborne Gravimetry Data from GEOHALO project - (Data Set)

DOI

The dataset contains the results of airborne gravimetry realized by the GEOHALO flight mission over Italy in 2012. The intention was to show whether and how an efficient airborne gravity field determination is feasible in wide areas when using a fast jet aircraft like HALO at higher altitudes. Here, unlike in airborne gravimetry for exploration purposes, the aim is not primarily to reach the highest spatial resolution by flying as low and slowly as possible. A challenge for HALO would be to map areas (e.g., Antarctica) where only insufficient or no terrestrial gravity data are available to achieve a resolution which is better than that of satellite-only gravity field models. This is beneficial for the generation of global gravity field models which require a uniform, high spatial resolution for the gravity data over the entire Earth. The raw gravimetry recordings were recorded by the GFZ air-marine gravimeter Chekan-AM. Kinematic vertical accelerations were calculated from Doppler observations which were derived by GNSS carrier phase measurements (1 Hz). To remove the high-frequency noise, a low-pass filter with a cut-off wavelength of 200 s (corresponding to a half-wavelength resolution of approximately 12 km) was applied to both the Chekan-AM measurements and GNSS kinematic accelerations. To investigate how future airborne gravity campaigns using jet aircraft could be optimized, a dedicated flight track was repeated two times which shows that the equipment worked well also at higher altitude and speed. For the accuracy analysis 17 crossover points could be used. This analysis yielded a RMS of the gravity differences of 1.4 mGal which, according to the law of error propagation, implies an accuracy of a single measurement to be 1 mGal. The dataset is provided in as ASCII text (Lu-et-al_2017-001_Tracks_GEOHALO.txt) and is described in the README. For a detailed description of the set-up and analysis of the data, please see Biao et al. (2017, http://doi.org/10.1002/2017JB014425).

Identifier
DOI https://doi.org/10.5880/GFZ.1.2.2017.001
Related Identifier https://doi.org/10.1002/2017JB014425
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:6346
Provenance
Creator Lu, Biao (ORCID: orcid.org/0000-0003-0859-650X); Barthelmes, Franz (ORCID: 0000-0001-5253-2859 Print view); Petrovic, Svetozar (ORCID: 0000-0002-0744-577X); Pflug, Hartmut; Förste, Christoph ORCID logo; Flechtner, Frank ORCID logo; Luo, Zhicai; He, Kaifei; Li, Min; Scheinert, Mirko
Publisher GFZ Data Services
Contributor Lu, Biao; Barthelmes, Franz; Petrovic, Svetozar; Pflug, Hartmut; Förste, Christoph; Flechtner, Frank; Luo, Zhicai; He, Kaifei; Li, Min; Scheinert, Mirko
Publication Year 2017
Funding Reference Deutsche Forschungsgemeinschaft, FO 771 8 1
Rights CC BY 4.0; http://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact Lu, Biao (GFZ German Research Centre for Geosciences, Potsdam, Germany); Barthelmes, Franz (GFZ German Research Centre for Geosciences, Potsdam, Germany)
Representation
Language English
Resource Type Dataset
Format text/plain
Size 3964239 Bytes; 2 Files
Discipline Geosciences
Spatial Coverage (10.000W, 36.000S, 19.000E, 46.000N); Airborne gravimetry data from Chekan-AM - GEOHALO project
Temporal Coverage Begin 2012-06-06T00:00:00Z
Temporal Coverage End 2012-06-12T00:00:00Z