Read e-book Aftershock (The American Geological Survey Book 2)

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Read on my friends. Apr 10, Christine Jordan rated it really liked it. This review has been hidden because it contains spoilers. To view it, click here. I received this book from Voracious Readers for an honest review. This started with a pretty good hook with the murder of Simon. The magic was introduced right away with how Vallon is able to manipulate her power.

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I found this interesting as a tool and a different aspect of magic use. I really enjoyed the fact that magic users lived in "our world". The book continued to pick up steam as the story continued. There were a couple of predictable things but otherwise the story was good and kept you g I received this book from Voracious Readers for an honest review. There were a couple of predictable things but otherwise the story was good and kept you guessing as to what was happening in the larger scope of things.

I am looking forward to reading the second installment. Jun 03, Janis rated it liked it. An interesting idea - I guess that explains that feeling of deja vue you get when you're in certain locations. It really was different looking before! Nice strong heroine, well built characters, great setting. Would be great to see more interaction with other "branch" offices or even international offices, as they now know its not an exclusive to North America mutation.

What do you think? Leave a respectful comment.

Perhaps that is in a future version of the series, will have to keep reading. Jan 02, Jean rated it really liked it. I received a free copy of this book for an honest review. This is a favourite genre of mine and I welcomed a lead character, Vallon Drake, who has a wholly different power to any I have encountered before. The ability to manipulate the topography of any given area.

The Organisation itself is fighting against the powers that be who are trying to amalgamate it into Homela I received a free copy of this book for an honest review.

The Organisation itself is fighting against the powers that be who are trying to amalgamate it into Homeland Security by any means possible. The storyline starts with the murder of Vallon's work partner. The crime scene proves that another who has this ability is responsible. Vallon becomes the number one suspect of the police. The plot is fast paced and driven by Vallon's actions and inactions as she investigates to identify the murderer.

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She encounters a sinister presence, allies and adversaries or both and some unnerving situations along the way culminating in an epic battle in an attempt to save the city from a rogue agent. It kept me interested enough to read into the early hours. The only criticism I have is the side effect that occurs to Vallon after she has used her power. I felt it was repetitive in it's explanation which was annoying and I couldn't understand the point of it. At the end of the book there is a scenario that mentions this side effect and perhaps some reason for it?

Time will tell as this is book one of the series and I am interested enough to read further. Jul 04, J. Really fun and original urban fantasy novel, with a tough heroine and one of the most fascinating worlds I've read about in a long time. Once I got past the initial confusion as to Karen Abrahamson's version of Seattle, I was completely hooked on the world and its characters, and read the entire story in 24 hours. The idea of redrawing the "map" of the world in kind of a cold war stalemate occurring between and within countries totally fascinated me.

Rather than a "magical" world, this felt very Really fun and original urban fantasy novel, with a tough heroine and one of the most fascinating worlds I've read about in a long time. Rather than a "magical" world, this felt very grounded and real to me I found myself sucked into the power struggles between this off-shoot of Homeland Security and the rest of the agency, as well as between the different characters within the branch itself.

The main character, Vallon Drake, is an agent of the GSA and one of the "gifted" tasked with holding the nation's boundaries and correcting accidental changes to the landscape by nascent gifted who are unaware of their abilities. In her world, if one is gifted they can access an ability to remake the physical But woe to the person or people who happen to be inside the building being redrawn! The story opens with Vallon looking for a colleague of hers who is caught in just this predicament. While trying to save his life, she ends up a murder suspect, and in the course of trying to clear her name uncovers a wider plot to destroy the NW coast of the United States.

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It's a fun ride, and I'm really looking forward to more books in this world! The American Geological Society is an organization charged with making sure that the country remains stable—geographically speaking. I love the grittiness of the setting, the incredible odds against Vallon, and the fact that she is too busy trying to save the world to worry about being nice.


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Karen Abrahamson crafts a superb fantasy thriller with a spicy note of romance thrown into the mix. Vallon Drake's one of the Gifted, a woman with the power to 'edit' the world so that buildings, neighborhoods, or entire landscapes can come into - or be erased out - of existence. This gives rise to a fun and entertaining conceit: that the American Geological Survey is in fact the most powerful group in the Homeland Security agency. But Vallon's faith in the agency and her powers are challenged t Karen Abrahamson crafts a superb fantasy thriller with a spicy note of romance thrown into the mix.

But Vallon's faith in the agency and her powers are challenged the night that one of her fellow agents - and a recent ex-boyfriend - is murdered. Specifically, murdered by someone with that same awe-inspiring cartographic ability. Afterburn's an original and engrossing take on urban fantasy. It'll keep you reading through the night as Vallon must solve the case Karen Abrahamson's "Afterburn" is an urban fantasy with an original premise: There are people out there who can reshape our world simply with vellum and ink. Many of these "Gifted" work for the GSA and keep the nation's borders in their proper place.

The world and the characters are well drawn, especially the heroine, Vallon Drake. Vallon finds herself in the center of a power struggle in the Department of Homeland Security which wants to control the GSA and a murder suspect to boot. Along the w Karen Abrahamson's "Afterburn" is an urban fantasy with an original premise: There are people out there who can reshape our world simply with vellum and ink.

Along the way, she uncovers a plot to destroy Seattle and must find a way to put a stop to it while dodging those who want to arrest or detain her. The book is fast paced and while the romance was "spicier" then I like, overall the writing is fantastic. I hope this is not the last we see of Vallon Drake! Karen Abrahamson's Afterburn is a grab-you-by-the-collar, won't-let-go urban fantasy with a compelling heroine in Vallon Drake. She does what she believes to be right no matter the consequences. Vallon's agency polices the changes caused by "Gifted" with the ability to reshape the world.

With agents dying and a battle shaping up between her agency and Homeland Security, Vallon must solve the mystery of a new force more powerful than anyone has encountered to save her friends, her love, herself, a Karen Abrahamson's Afterburn is a grab-you-by-the-collar, won't-let-go urban fantasy with a compelling heroine in Vallon Drake. With agents dying and a battle shaping up between her agency and Homeland Security, Vallon must solve the mystery of a new force more powerful than anyone has encountered to save her friends, her love, herself, and hundreds of thousands of innocents.

Rich with original magic and a gritty, well-drawn world, and spiced with mystery, suspense, and sexy romance, Afterburn is a hell of a read. Looking forward to the next Vallon Drake book! Gripping fun.

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Abrahamson has created an exciting new entry into the fantasy genre with characters who can call on the power of the earth to redraw reality with vellum and ink. And she's got a great kick-ass heroine leading the charge. I was totally into the magic, the characters, the politics of Homeland Security trying to draw the Gifted into their fold. It's an engrossing read with a mind-blowing climax that will have you rethinking just how safe you are if you live in any of nature's danger zo Gripping fun.

Many nuclear tests in the past were accompanied by an underground collapse e. We study a similar event, as large as m L 4. Later, at , an event of m L 4. Here we analyze source processes of the recent explosion mainshock and its early m L 4. A deep insight into Event 2 is possible thanks to unique data from nearby broadband seismic stations. At more distant stations, Event 2 is obscured by noise and seismic coda of Event 1. Model parameters of the inverse problem are simply the weights a1—a6 of the elementary MTs. The match between real and synthetic waveforms is quantified by variance reduction, and resolvability of the inverse problem is characterized by condition number.

For any single source position e. The posterior covariance matrix of model parameters C m is expressed via the Green's function matrix and data covariance matrix C d. Hence, a Gaussian posterior PDF is known. If the source depth is included in the model parameters, the inverse problem is nonlinear. The normalization constants Hallo et al. For each depth, a set of random MTs is generated, while the number of samples is proportional to the normalization constants.

The union of the sample sets represents the total PDF. Two velocity models Bassin et al. The models enabled waveform fitting of dominant surface waves without any artificial time shifts. Thus, we assumed a common epicenter for Events 1 and 2 at We used trial source depths at 0. Altogether, 30 polarities were reliably determined for Event 1, all positive, but none was clear enough for Event 2. As in previous studies Ford et al. Moment magnitude M w trades off with depth, decreasing from 6 to 5. At the 1. This model predicts compressive first arrivals on the entire focal sphere. Before proceeding to aftershocks, which practically cannot be analyzed from more distant stations, we verify the mainshock results at 10 stations in Japan.

Lower frequencies 0. Rayleigh waves R and Z components are fitted very well. The M w range 6. Thus, apart from its size, Event 2 is a mirror image of Event 1. However, as explained, this latter feature cannot be verified due to natural noise and coda of Event 1.

Strongly contrasting with the small DC part of Events 1 and 2 is an aftershock of m L 3. The preferred depth was 3. Two smaller events occurred between 3 and 23 September, but their focal mechanisms could not be calculated. Formal interpretation of the inferred body forces is straightforward. Both events can be described in terms of a tensile source model Julian et al.

Primary effects of buried nuclear explosions are cavity formation and damage to the surrounding medium by shock waves. Seismic events attributed to cavity deterioration and chimney collapse have been known e. Moreover, collapse events observed in the s and s were reported to have symmetric sources, generating insignificant Love waves Toksoez et al. The test mainshock, Event 1 and the nontectonic aftershock occurring 8.

Both events featured a very small DC part especially Event 2.

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As Chiang et al. Seismic models, like in this paper, provide only partial understanding of the underground explosions. Physicochemical models are needed to fully explain the involved processes and to illuminate environmental aspects, such as release and migration of radionuclides, possibly contaminating groundwater Tompson et al.

Figures were created using GMT 4. One of the authors L. Craig Bina read the manuscript and provided many useful suggestions. Ford, and three anonymous reviewers improved the paper. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries other than missing content should be directed to the corresponding author for the article.

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Abstract Seismology illuminates physical processes occurring during underground explosions, not all yet fully understood.