The 3D seismic cube is in SEG-Y format with SP in byte 5, inline number in byte 25 and xline number in byte 17. Processing includes repositioning, time migration and depth conversion using a smoothed velocity field based on Berndt et al., 2019. Acquisition parameters are discussed in the SO227 cruise report (Berndt et al., 2013).

3D reflection seismic data were acquired using the P-Cable system of the National Oceanographic Centre, Southampton, UK during cruise 178 Leg 2 onboard RRS Charles Darwin between the 5th and 8th of April 2006. The responsible PI's was C. Berndt, Southampton Oceanography Centre, Southampton, UK. The aim of this cruise was to map submarine landslides on the eastern slopes of the Eivissa Channel, western Mediterranean Sea located between the islands of Ibiza-Formentera and the Spanish mainland. Berndt et al. (2012) used the acquired data to study repeated slope failure linked to fluid migration, while Lafuerza et al. (2012) studied geotechnical aspects of slope stability using this as additional data. Acquisition parameters: The source during seismic acquisition consisted of four 40 in3 Bolt 600B air guns spaced 0.75 m apart and tower at a depth of 1.5 m about 20 m behind the stern of the vessel (Berndt et al., 2012). The air guns are fitted with wave shape kits that emit approximately 10 in3 of air prior to the main volume to reduce the bubble pulse. The air pressure is 2000 psi, and the gun controller triggers the guns to figure every 7 seconds. The data were collected with 11 single-channel analogue streamers that were towed 10 m apart. The seismic cube in the Eivissa Channel covers an area of ca. 14 km2 (ca. 6.4 EW x 2.2 NS km) located at 306091.83 4280497.41; 305951.42 4278353.92; 312321.94 4277936.57 in UTM zone 31N. 3D seismic processing: Data were frequency filtered from 45 to 220 Hz and binned at 10 m bin interval before a Stolt time migration with a migration velocity of 1500 ms-1 was carried out. The resolution of the data is approximately 5-6 m vertically and for the 10 m inline and crossline spacing the horizontal resolution is 10-15 m (Berndt et al., 2012). Seismic data acquisition was performed between 10:05 PM on the 5th of April until 08:30 PM on the 7th of April 2006 (CD178 cruise report). The seismic cube is located at water depths of 550 to 825 m from east to west. Raw data is available here:doi:10.1594/PANGAEA.943523.

This dataset includes reprocessed boomer 3D seismic data collected by the Fugro Consultants Inc. in 2012, offshore Point Sal, central California.

The future success of both enhanced (engineered) geothermal systems and shale gas production relies significantly on the development of reservoir stimulation strategies that suit the local stress and mechanical conditions of the prospects. The orientation and nature of the in-situ stress field and pre-existing natural fracture networks in the reservoir are amongst the critical parameters controlling the success of any stimulation program. This work follows an initial study showing the existence of natural fractures in the area covered by the MoombaBig Lake 3D seismic survey, in the South-Western termination of the Nappamerri Trough of the Cooper Basin in South Australia. The fractures, imaged both by borehole image logs and seismic attributes (Most Positive Curvature and Ant tracking), are pervasive across the seismic survey, and present a relatively constant NW-SE orientation. We processed and analyzed the 3D seismic cube, Moomba- Big Lake survey in the Cooper Basin. Most positive curvature attribute (MPC) was then calculated from a structurally smoothed, non-steered version of the seismic cube. Comparing the curvature signatures with the seismic amplitude signatures indicated that all the curvature values ? 0.2 are mapping structural features that enhance fracture stimulation (i.e. faults and folds). A new cube with curvature values ? 0.2 was then generated, and the ant tracking technique was applied to the final cube. We calibrated the resulting cube using seismic amplitudes, image logs, and well data and a highly positive correlation was found. Also, analysis shows that under present day stress orientation and magnitudes, fractures striking NW-SE and NE-SW are more susceptible to stimulation, and are more likely to open for fluid flow. Accordingly, the current procedure provided a solution for mapping structural features pre-drilling, which affect reservoir porosity and permeability and will help developing stimulation strategies.

The data are a processed and interpolated P-Cable 3D seismic data cube. The data were collected during expedition POS515 with the research vessel POSEIDON (Riedel et al., 2017) in the Mediterranean Sea, Calabrian Arc offshore southern Italy (map under further details). Seismic source was a Generator-Injector airgun fired in harmonic GI mode with generator and injector volume of 105 cubic inches. The source was towed at a nominal depth of 2 m beneath the sea surface. We deployed a P-Cable system made from 12 parallel streamers (each 12. 5 m in length). Details on the towed geometry are given in Figure 30 of the cruise report (Riedel et al., 2017). The P-Cable data were acquired over the course of 6 days during POS515 starting from 13:45 on July 5, 2017 until 12:06 on July11, 2017 (all CET). Processing included: 3D geometry application, trace editing, static time corrections, band-pass filtering, sorting to common midpoint gathers, normal moveout correction (1520 m/s velocity ), and stacking. The stacked 3D cube was then interpolated to fill any empty bins. Afterwards, Stolt time migration (1550 m/s) was performed, first inline, then crossline direction. The dataset has a horizontal resolution of 3.125 m (bin size) and a dominant frequency of ~100 Hz.

Included here are 3D post-stack time migrated data from Montserrat, Lesser Antilles. The data were collected aboard RV METEOR in 2019 during Research Cruise M154/1 using GEOMAR's P-Cable seismic system. Seismic source were two Generator-Injector airguns fired in TRUE GI mode with generator and injector volumes of 105 cubic inches. The source was towed at a nominal depth of 2 m beneath the sea surface. Shot interval was 5 seconds at a ship speed of ~3.5 knots. Gun pressure was set at 160 bar. The receiver geometry consisted of 14 to 16 streamer sections attached to a 199 m long cross cable. Processing included: 3D geometry application, trace editing, static time corrections, anomalous amplitude attenuation, FK filtering, pre-stack trace interpolation, adaptive subtraction multiple suppression, sorting to common midpoint gathers, normal moveout correction (1580 m/s to 1725 m/s gradient velocity model), stacking, trace interpolation, 3D FK coherency filtering, 3D finite difference migration (1580 m/s to 1725 m/s gradient velocity model; first inline, then crossline). The dataset has a horizontal resolution of 3.125 m (bin size) and a dominant frequency of ~100 Hz.

In 2003 BGR purchased the well Horstberg Z1 together with a 3D seismic cube from BEB Erdgas und Erdöl GmbH. This former exploration well provides the worldwide unique opportunity to explore the geothermal usage of not, or only slightly, permeable sandstones. For further modelling tasks a digital 3D model of the quite complex structure was created. The model is based upon a highly detailed seismic interpretation of the 3D cube and was enlarged using parts of the Geotektonischer Atlas 3D (Bombien et al. 2012).

The data are a fully processed P-Cable 3D data cube. The data were collected during expedition MSM34 with the research vessel MARIA S. MERIAN (Bialas et al., 2014) in the western Black Sea (map under further details), off Romania. In the region covered by the 3D data, deep drilling was conducted in 2017 with the MARUM-MeBo-200 seafloor rig as part of expedition METEOR M142 (Bohrmann et al., 2018).

3D reflection seismic data were acquired using the P-Cable system of the National Oceanographic Centre, Southampton, UK during cruise 178 Leg 2 onboard RRS Charles Darwin between the 5th and 8th of April 2006. The responsible PI's was C. Berndt, Southampton Oceanography Centre, Southampton, UK. The aim of this cruise was to map submarine landslides on the eastern slopes of the Eivissa Channel, western Mediterranean Sea located between the islands of Ibiza-Formentera and the Spanish mainland. Berndt et al. (2012) used the acquired data to study repeated slope failure linked to fluid migration, while Lafuerza et al. (2012) studied geotechnical aspects of slope stability using this as additional data. Acquisition parameters: The source during seismic acquisition consisted of four 40 in3 Bolt 600B air guns spaced 0.75 m apart and tower at a depth of 1.5 m about 20 m behind the stern of the vessel (Berndt et al., 2012). The air guns are fitted with wave shape kits that emit approximately 10 in3 of air prior to the main volume to reduce the bubble pulse. The air pressure is 2000 psi, and the gun controller triggers the guns to figure every 7 seconds. The data were collected with 11 single-channel analogue streamers that were towed 10 m apart. The seismic cube in the Eivissa Channel covers an area of ca. 14 km2 (ca. 6.4 EW x 2.2 NS km) located at 306091.83 4280497.41; 305951.42 4278353.92; 312321.94 4277936.57 in UTM zone 31N. 2D seismic processing: During seismic processing of the 3D dataset significant ghost-artefacts were identified because some of the streamers were towed too deep. This required de-ghosting. Unfortunately, these attempts did not yield improved quality of the 3D seismic data. This was mainly because the 12.5 m streamers were too short for commonly used de-ghosting technique used in the industry. To increase vertical resolution individual 2D profiles were extracted from the raw dataset. Processing steps included frequency bandpass filtering, burst noise attenuation, binning, NMO-correction, stacked, and a Stolt migration with 1520 ms-1 was applied that resulted in higher resolution 2D profiles for 85 lines and 11 streamers (channels).

The major aims of Charles Darwin cruise 178 were to obtain: (i) 3D seismic imagery, video transects and swath bathymetry maps of mud volcanoes in the southern Gulf of Cadiz, (ii) video transects across suspected cold water coral reefs in the Alboran Sea, and (iii) 3D seismic imagery of submarine landslides in the Eivissa Channel, immediately east of the Balearic Islands in the western Mediterranean Sea.

The cruise was in support of the EU Framework 6 'HERMES' project (Hotspot Ecosystem Research on the Margins of European Seas). A total of four 3D seismic cubes and 10 successful video transects were completed. Live chemosynthetic communities found on one mud volcano in the Gulf of Cadiz appear to indicate active methane seepage. Images of gas-charged sediments in areas of submarine landsliding in the Eivissa Channel appear to indicate a direct linkage between landsliding and fluid escape.