ABSTRACT This paper interprets aeromagnetic data for a deep basin section of the Karroo rift in south‐east Tanzania. We use novel integrated approach involving application advanced derivatives to define structure and tilt‐depth method determine map depth basement. In latter case we result both reduced pole equator help constrain shape basin. show that set, generalized form local phase, called tilt derivative, is an effective means providing initial (first pass) mapping sedimentary terms its...

Mount Cameroon (MC), West Africa's most active volcano, is a typical example of hazardous volcano in densely populated area, often inflicting damage by lava flows. The spatial variation the flow hazard has not been mapped systematically at MC and many other volcanoes developing countries because they are insufficiently documented continuously, monitored with integrated state‐of‐the‐art methods. Sophisticated models requiring specification numerous physical properties cannot yet be applied...

We use a multiscale approach as semi-automated interpreting tool of potential fields. The depth to the source and structural index are estimated in two steps: first source, intersection field ridges (lines built joining extrema at various altitudes) secondly, by scale function. introduce new criterion, called 'ridge consistency' this strategy. criterion is based on principle that estimations all converging towards same should be consistent. If these estimates significantly different,...

We sought to map the depth and density contrast of Mohorovičić discontinuity (Moho) across Red Sea area model sedimentary thickness from gravity data. The data that are used a combination satellite terrestrial processed into Bouguer anomaly grid. A 200-km low-pass filter was separate this grid regional residual grids. inverted Moho based on is constrained by published seismic results. interpreted shallowest ([Formula: see text]) along axis central Sea, [Formula: text] south, in northern Sea....

[1] In potential field problems, the continuous wavelet transform (CWT) has allowed estimation of source properties, such as depth to and structural index (N). The natural choice for analyzing wavelets been set belonging Poisson kernel. However, a much larger used signals other than fields. Here we extend CWT fields families. Since is intrinsically dilated with Poissonian from measurement level, distortions are unavoidably introduced when uses different level scales. To fix problem, define...

Geologic features, such as faults, dikes, and contacts appear lineaments in gravity magnetic data. The automated coherent lineament analysis selection (ACLAS) method is a new approach to automatically compare combine sets of or edges derived from two more existing enhancement techniques applied the same data set. ACLAS can be results any edge-detection algorithms overcomes discrepancies between generate set detected lineaments, which reliably incorporated into geologic interpretation. We...

Geological features, such as faults, dikes and contacts, appear lineaments in potential field data. Here we describe a new approach to automatically analyze sets of lineaments, (Total Horizontal Derivative maxima zero contours Tilt), derived from the same gravity data set. Coherency analysis – ACLAS generates set consistent which more accurately identify locations geological features before determining their depth, density contrast direction throw. The automated method provides...

In recent years the Continuous Wavelet Transform revealed a valuable method to describe source properties of potential fields, but choice analyzing wavelets was restricted those belonging Possonian kernel, for fields Here we propose new approach which allows any kind wavelet be used. The resulting algorithm is stable and may applied several cases by using each time more suitable wavelet.

E022 Improved SCALFUN Analysis of Potential Fields by a Criterion Ridge–Consistency M. Fedi* (University Napoli Federico II) G. Florio & L. Cascone SUMMARY Ridge analysis is well known in the frame Continuous Wavelet Transform methods and was recently proposed as main step potential field interpretation method SCALFUN. The information related to more ridges converging same one-point source should be consistent otherwise poor quality estimates properties has expected. This can due an

Summary The southern Portuguese margin recorded significant extension and subsidence during the Jurassic, resulting in formation of Algarve basin. Recent studies have revealed existence oceanic crust, potentially Jurassic age, underlying portions Gulf Cadiz to south west basin, but exact relationship between this basin crust is still ambiguous. In study we integrate data derived from field outcrop studies, interpretation commercial seismic, gravity magnetic modelling better understand...

Summary A gravimetric study has been carried out over a sector of the West Iberian Margin (WIM), constrained by well and seismic data. The analytic development was made through three main stages: processing different gravity datasets, production anomaly maps 2,5D models using processed data, geophysical interpretation models. final results achieved, allowed determination crustal structure its variation/complexity along WIM. obtained concern pre-saline infilling deep margin, which vary...

Abstract Here we present a regional study of the offshore/onshore Namibia using gravity and magnetic data aiming to bring new light on structural configuration major Namibian basins. This has been achieved by integrating all available wells, vintage seismic images public domain information. We produced lineament maps at different scales with aid enhancements in attempt differentiating between local features. In general, volcanic centres dikes are well recognized as two main trends: one...

Summary The area of interest is located in northern offshore Tunisia which belongs to the Maghrebide-Apennine Fold-Thrust Belt. In this complex geological region, numerous 2D seismic surveys have been acquired showing a very poor data quality. presence residual noise, diffracted energy from steeply dipping faults and strata, diapiric bodies are main factors that degrade imaging. Repsol managed increase quality quantity by re-processing old surveys, acquiring new high resolution bathymetry,...

This paper uses 3D inversion of satellite gravity data to identify and map the positive component due Moho interface upper mantle beneath along Red Sea. The was constrained based on seismic in northern depth varies from ∼35 km adjacent continents around 20 at coast shallows axial troughs about 10 km. results, which have been by some but not all measurements, are good agreement with other published depths. approach could be used continental margins, provided appropriate control information is...

The multiscale analysis of potential fields is a valid tool to study the source properties. Among methods, Continuous Wavelet Transform (CWT) well established due its natural filtering From beginning choice analyzing wavelet has been set belonging Poisson kernel: within this framework CWT can be easily performed by upward continuing kth horizontal derivative field, some constant apart. We here use recent development CWT, called Generalized (GCWT) allowing any used (Fedi and Cascone, 2008)...

Summary In late 70s, hydrocarbon exploration in Blach Sea concentrated on the shallow water shelf area. The focus has change for frontier deep settings last decade, with discovery of Domino gas field. brought significant amount new data, both local and regional character. These include 2D 3D seismic, Gravimetric Magnetic a reasonable well essential models calibration validation. integration these data brings insights over basin architecture evolution. One key aspects kinematics petroleum...

Summary Efficiently managing people and resources of large oil gas assets, can be a complicated task. Many vehicles, people, equipment, amount data is involved in the development field. Moreover, safety always first priority risk accidents different nature magnitude must considered. Greater control vehicles needed to increase efficiency daily operations. We developed an in-house, low-cost digital platform using GIS situational awareness developing field, allowing handle incidences faster...