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WHAT IS HAPPENING AT WHITE ISLAND VOLCANO??? New Zealand/Kermadec & South Pacific QUAKE/VOLCANO WATCH
Ms Sans Serif
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[quote:Anonymous Coward 2676183:MV8xODU4NDY2XzM0MjkxMzAyXzhENTgwNTZC] [quote:Tauranga:MV8xODU4NDY2XzM0MjkwNzk3XzkzNDU4NTE0] [quote:Mahala:MV8xODU4NDY2XzM0Mjg4Nzg0X0VCODNFNEIw] [quote:Mahala:MV8xODU4NDY2XzM0Mjg4NzUwXzU5NDA1RUU0] [quote:Tauranga:MV8xODU4NDY2XzM0Mjg4NTMzXzk1OTc3Q0I2] [quote:Mahala:MV8xODU4NDY2XzM0Mjg4MzAyX0NEMzA2MzUx] Hi Sis, I have some interesting read for you. I haven't gone over it all, but have booked marked it to read later.. Has some interesting stuff in it that I know you would enjoy.. [b]LiDAR-based quantification of lava flow susceptibility in the City of Auckland (New Zealand)[/b] http://www.sciencedirect.com/science/article/pii/S0034425712002891:hf: [/quote] hiya mahala thank you, yes, this does look very interesting.. but when i go to the link, i get this: http://linkinghub.elsevier.com/retrieve/pii/S0034425712002891:HF:?via=sd [/quote] looks to be a server error I think. I'll try to find another one... [/quote] found the pdf file of it...https://zen.nzherald.co.nz/media/webcontent/document/pdf/201234/lava.pdf [/quote] thanks sis, i will check it out now xx [/quote] Lava ﬂows represent one of the most signiﬁcant volcanic hazards from basaltic monogenetic volcanoes, such as spatter cones, scoria cones, maars, and tuff rings. They are common features emanating from parasitic vents on the ﬂanks of polygenetic volcanoes and in dominantly ‘ﬂat-lying’ intraplate volcanic ﬁelds. The Auckland Volcanic Field (AVF) is a volcanic ﬁeld that has been active for the last ca. 250 ka, hosting at least 50 monogenetic volcanoes. Morphometric parameters of lava ﬂows, such as volume, length, thickness and area, were used to quantify the potential lava-ﬂow inundation susceptibility to New Zealand's most densely populated area, the City of Auckland based on an airborne Light Detection and Ranging (LiDAR) Digital Surface Model (DSM). The morphometric parameters of ﬁfteen studied ﬂows included: average length of 2.5 km (range 0.7–6.5 km), overall average thickness of 14.8 m (range 3.4–43.8 m), average of maximum thicknesses of 48.2 m (range 18.3–180.5 m), average area occupied of 5.1 km2 (range 0.4–25.1 km2 ) and average volume of 0.12 km3 (range 0.005–1 km3 ). Based on these parameters and a LiDAR-derived DSM, the present topography was classiﬁed into: sea, topographic depressions; low-lying areas prone to inundation by an average lava ﬂow; buffer zones prone to inundation only by extremely thick lava ﬂows; and peaks or ridges, which are unlikely to be overtopped. In monogenetic ﬁelds, each new vent occurs in a new location, creating uncertainty around the spatial location of the volcanic hazard. Thus, this research provides a general vent location-independent approach to describe the lava ﬂow susceptibility for a potentially active monogenetic volcanic ﬁeld. What this analysis reveals is that the City of Auckland can be divided into two distinct areas with strongly different susceptibility to lava ﬂow inundation. The southern part of the City is predominantly ﬂat, without hindrance to lava ﬂow, whereas the hilly northern and central part has many ridges that can limit or channelise lavas. These contrasting properties must be accounted for in scenario-based or probabilistic hazard and risk models developed for the AVF. Basaltic, monogenetic volcanoes often produce lava ﬂows with a wide range in length and size (Felpeto et al., 2001; Harris & Rowland, 2001; Tucker & Scott, 2009). The length of lava ﬂows is mostly dependent on the rate of effusion (Harris et al., 2007; Walker, 1973), the total volume (Stasiuk & Jaupart, 1997), the crystallinity and viscosity (Dragoni & Tallarico, 1994; Grifﬁths, 2000), the slope angle of the substratum (Favalli et al., 2009b) and other topographic features, such as valleys (Rodriguez-Gonzalez et al., 2011). To quantify and express such controlling conditions on lava ﬂow emplacement, which are the basic inputs required of lava ﬂow simulation codes, remotely sensed data are commonly used. For detection of active lava ﬂows, the thermal bands of various satellites, such as MODerate resolution Imaging Spectroradiometer (MODIS), Advanced Spaceborne Thermal Emission and Reﬂection radiometer (ASTER) and LANDSAT Thematic Mapper are used (Ganci et al., 2012; Harris et al., 1998; Lombardo & Buongiorno, 2006; Pieri & Abrams, 2005; Wright et al., 2004). These remote sensing data can provide information about the time-averaged discharge rates of a lava ﬂow, which is one of the major requirements of lava ﬂow simulations. Lava ﬂows related to monogenetic eruptions are commonly small in volume (≤1 km3 ) and affect small areas (a few square kilometers). This small size requires at least medium (10–50 m) to high resolution (≤10 m) imagery to map them accurately. Many types of topographic data can be used to calculate lava ﬂow volumes including Light Detection and Ranging (LiDAR) (Harris et al., 2010), Interferometric Synthetic Aperture Radar (INSAR) (Mouginis-Mark & Garbeil, 2005), ASTER stereo image-based Digital Surface Models, i.e. DSMs (Hirano [/quote]
Targeting Coronal Hole (CH515). After analysis i have Isolated (1-9°N Latitude) on the solar corona. Strong characteristics of this feature indicate a possible 7 Magnitude earthquake in one of these locations during this watch period:
Costa Rica, Panama, Sudan, Ethiopia, Nicobar Islands or Northern Sumatra. Time frame May 9-11
Coronal feature situated (44-49°S Latitude) could produce a possible 5.5-5.8 Magnitude earthquake during May 5-6. Best mapped regions are : Aisen Chile, Auckland Islands New Zealand, Southern East Pacific Rise.
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