Skip to main content

Mapping Seismic Activity: Vulnerable vs. Non-Vulnerable Regions


The study of plate tectonics offers an interesting view on our planet’s past, present, and future seismic activity. The larger and expanded map indicates the probable intensity of earthquakes that could happen in the next 50 years, starting from 2004. The green lines represent the earth’s plate boundaries and the shaded colors ranging from grey to orange represent the probable intensity of an earthquake in that specific region. Each red dot on the map represents a recorded seismic event since 1900 that had a Seismic Moment Magnitude above 8.5. Dr. Jean-Paul Rodrigue, the author of this map, explains that it is a matter of when, rather than if, that these endangered areas face some sort of seismic activity in the near future.

Although there are vulnerable areas in middle Asia, the Middle East, and Europe, with very distinguishable seismic activity, such as Italy for example, most areas that have had either previous or predicted earthquakes exist on the edges of the Pacific Ocean in a region called the Ring of Fire, depicted in the zoomed-in second map. This horseshoe shaped border of most of the Pacific Ocean stretches for 40,000 km (≈25,000 miles) and contains 75% of the earth’s active and dormant volcanoes. Notice that out of the documented 16 earthquakes that had magnitudes higher than 8.5, 12 occurred almost directly on the Pacific Ring of Fire. This is no coincidence. A collection of convergent, divergent, and transform boundaries create this highly active ring where powerful earthquakes shake the ground and active volcanoes reshape terrains.

Recently within the Ring of Fire, Asia has suffered from catastrophic earthquakes and tsunamis generated from deep-sea earthquakes. Mount Ruapehu in New Zealand has continued to be one of the most active volcanoes on earth with consistent annual eruptions, and Chile has had some of the most spontaneous seismic activity in the world. It is hard to not become a little daunted by the events that have occurred within the Ring of Fire, especially for those who reside directly on and near the plate boundaries. One cannot help but to question where the next site of devastation will occur. With that said; continued research and mapping of seismic activity will generate more data and scientific breakthroughs which in turn will increase the predictability of dangerous seismic activity.

–Pete D
Photo Credits: 1. Dr. Jean-Paul Rodrigue, Hofstra University http://people.hofstra.edu/geotrans/eng/ch9en/conc9en/plate_tectonics.html 2. Dr. Jean-Paul Rodrigue, Hofstra University http://people.hofstra.edu/Jean-paul_Rodrigue/GESA/topic1/ringoffire.html

References: 1. http://education.nationalgeographic.com/education/encyclopedia/ring-fire/?ar_a=1 2. http://pubs.usgs.gov/fs/2005/3045/ 3. http://www.volcanolive.com/active2.html 4. http://volcanoes.usgs.gov/activity/status.php
(Source: facebook.com)


 Via the-earth-story.com

This post may contain affiliate links. As an Amazon Associate, I earn from qualifying purchases.


Comments

Popular posts from this blog

Find cities with similar climate

This map has been created using The Global environmental stratification. The Global environmental stratification (GEnS), based on statistical clustering of bioclimate data (WorldClim). GEnS, consists of 125 strata, which have been aggregated into 18 global environmental zones (labeled A to R) based on the dendrogram. Interactive map >> Via www.vividmaps.com Related posts: -  Find cities with similar climate 2050 -  How global warming will impact 6000+ cities around the world?

Moose population in North America

The moose population in North America is shrinking swiftly. This decrease has been correlated to the opening of roadways and landscapes into this animal's north range.   In North America, the moose range includes almost all of Canada and Alaska, the northern part of New England and New York, the upper Rocky Mountains, northern Minnesota and Wisconsin, Michigan's Upper Peninsula, and Isle Royale.    In 2014-2015, the North American moose population was measured at around one million animals. The most abundant moose population (about 700,000) lives in Canada. About 300 000 moose remains in nineteen U.S. states Alaska, Colorado, Connecticut, Idaho, Maine, Massachusetts, Minnesota, Montana, Michigan, Nevada, New Hampshire, New York, North Dakota, Oregon, Utah, Vermont, Washington, Wisconsin, and Wyoming. The largest moose specimens are found in Alaska 200 thousand moose. Below the map shows the size of US states scaled by the moose population.     Via www.vividmaps.com

Human Emotions Visualized

Despite significant diversity in the culture around the globe, humanity's DNA is 99.9 percent alike. There are some characteristics more primary and typical to the human experience than our emotions. Of course, the large spectrum of emotions we can feel can be challenging to verbalize. That's where this splendid visualization by the Junto Institute comes in. This visualization is the newest in an ongoing attempt to categorize the full range of emotions logically. Our knowledge has come a long route since William James suggested 4 primary emotions: fear, grief, love, and rage. These kernel emotions yet form much of the basis for current frameworks. The Junto Institute's visualization above classifies 6 basic emotions: fear, anger, sadness, surprise, joy, love More nuanced descriptions begin from these 6 primary emotions, such as jealousy as a subset of anger and awe-struck as a subset of surprise. As a result, there are 102 second-and third-order emotions placed on this emo