Another method is based on surface indications of likely underground rock formations.
In 1913, during the heyday of stock pools and insider trading, the market observer Harrison Brace wrote, "Calculations and statistics of great pith and moment are disregarded in the scramble for tips, rumors, and surface indications".
The survey methods described above can show the presence of large geologic anomalies such as anticlines (arch-shaped folds in subterranean layers of rock), fault blocks (sections of rock layers separated by a fracture or break), and salt domes, even though there may not be surface indications of their presence.
This irregular flow of groundwater seeps out and could be identified as surface indications along cut slope sections.
The groundwater condition of a particular slope is completely dry, damp, wet, dripping and flowing, which can be measured based on nature of surface indications [3, 11].
In the barely visible damage category, the composite facesheet layers attached to the foam experience a tension failure under low energy impact despite surface indications showing no fiber fracture.
Once the animal (animals) was (were) located, the distance source-hydrophone was estimated using surface indications of manatee presence, such as movement sounds, vocalizations and bubbles.
ToF-SIMS depth profiling confirmed this result, indicating the diminishing presence of PEDOT fragments with concomitant increasing PPy fragments as a function of depth from the top surface, an indication that PEDOT was stationed above PPy.
Satellite overpasses of the storm revealed that Celia had already begun developing an eye-like feature at the surface, an indication that rapid intensification may ensue.
