We found a higher percentage of 'Timely' and 'Almost' VALs (10% and 19%, respectively) in closed-vent (Figure 4) than in open-vent systems (3% and 12%, respectively).
The Fogo A deposit has a maximum total thickness exceeding 20 m on the rim of the caldera decreasing to 5 m at the coast 6 km south west of the vent (Figure 1, Walker and Croasdale 1971).
The more appropriate issuance of VALs at closed vents (Figure 4) is probably because magma needs to fracture rock or clear the conduit before it can reach the Earth's surface.
The comparison between the seismic signals at the two stations (Table 1) indicates that the amplitude at BVD is about 1 order of magnitude greater than that recorded at SLN, probably because BVD is closer than SLN to the eruptive vent (Figure 1a).
Interval times of eruptions and tilt amplitudes observed at the Semeru volcano, Indonesia, are about 3 to 30 minutes, and about 1 10 nanoradian at a distance of 500 m away from the active vent (figure 5 of Iguchi et al., 2008).
The MMM exercise is a jigsaw activity (Aronson et al. 1978; Shulman and Sherin 2004), in which students in small groups (3 4 students) are given one type of monitoring data, either tilt, GPS, webcams, or seismic data associated with the July 21 , 2007 fissure eruption on the east flank of the Pu'u 'Ō'ō eruptive vent (Figure 2; Poland et al. 2008).
and from off California (Dirivultus dentaneus; not at vents) (Figure 3).
Identical longitudinal ridges can be seen in the tubes of modern vestimentiferan tubes, particularly at the anterior ends, in both vent (Figure 5c) and seep species (e.g., [96], fig. 8.8 10).
It is designed for use with two delivery systems: one system for intubated patients (On-vent; Figure 1), and a second Handheld (HH) system for patients who are extubated before completing the course of therapy.
Background samples were also collected from a control site located away from actively venting sediments (Figure 3; 'control sample').
