Geophysical Mapping Procedure

Geophyscial Mapping Procedure

Geophysical mapping is the process of obtaining geophysical data from the earth’s surface (it could be on land, water or over the air) to be able to characterize the geologic or other physical properties of the Earth’s subsurface. Geoscientists produces maps, profiles or cross sections that represent the surface and or subsurface properties and its distributions spatially (laterally) and vertically.

There are 4 phases in geophysical mapping, and they include
1. Planning or Pre-Fieldwork Activities
This involves every pre-field activity. The objectives of the geophysical mapping survey are detailed, and all other useful information is collected. 

At this stage, previous information about the site, geologic maps, CAD designs, satellite imageries, remote sensing methodologies are also employed sometimes. Also, all instruments to be used are calibrated and tested.

The weather is observed, and a suitable day is selected. Logistics are also taken care of; all important personnel are contacted. Budgets are prepared and the needed permission is gotten from the right government body or authority (if needed). In cases where multiple entities are involved in the project, consensus and mutual agreements are reached at this stage of the project.

At Hephzibah Geosolutions, our geophysical mapping services in Arizona and other places include this planning phase to ensure proper organization in the field. To avoid unnecessary stress and damage, this is one phase no one should miss during a geophysical mapping process.

2. Reconnaissance Survey
Geologic and geophysical mapping services in Arizona and anywhere else should involve reconnaissance. This phase of mapping is done in the field. It involves a thorough assessment of the area. The road network leading to the area, availability of a store for equipment, flora and fauna in the area and many more. Also, you might want to contact the locals around the area to give you an insight into the historical background of the area you are working on. Also, since they know the area better than anyone, their advice would surely come in handy.

3. Data acquisition or Core Fieldwork Activity
This is the main geophysical fieldwork stage. In this phase, geophysical mapping processes commence. Geophysical equipment is used to collect precise and relevant data as needed and detailed in the first phase of the project. Data are saved, copied or duplicated severally to ensure nothing is lost during the process

4. Analysis and Report compilation
This is the last phase of the process, the data collected in the field is analyzed and a geophysical report is compiled. This report would contain results, methods used in the geophysical survey and conditions during the field work. A geophysical report should be concise, legible and easy to understand, as much as the geoscientist may want to include the technical terms, the executive summary of the report must be kept simple and clear to understand for a non-geoscientist that may want to implement the recommendations stated in the report.

In a concise term, these are the four simple stages of our operations for most of our projects, However, during each of the stages, we try our best to ensure we do not leave any stone untouched while carryout each stage, we try to be conscientious and thorough, we try to obtain very accurate our data and analysis. Our experts write very clear and understandable report for every of our projects.