scholarly journals Enjoy a new perspective of the Earth

Physics World ◽  
2011 ◽  
Vol 24 (11) ◽  
pp. 48-49
Author(s):  
Shannon Franks
Keyword(s):  
The Earth ◽  
New Perspective

Earth’s thermal cycles and geological events

2020 ◽  
Author(s):  
Bin Gong ◽  
Chun‘an Tang ◽  
Tiantian Chen ◽  
Zhanjie Qin ◽  
Hua Zhang
Keyword(s):  
Plate Tectonics ◽  
Biological Evolution ◽  
Radioactive Decay ◽  
Thermal Cycles ◽  
Red Beds ◽  
Cold Event ◽  
Geological Processes ◽  
The Earth ◽  
New Perspective ◽  
The Relationship

<p>Alternative cooling and warming have occurred many times in the history of Earth since its formation. In the meantime, active and quiescent periods of geological activity have also alternatively occurred in this same planet. When Earth became hotter, it shows widespread geological activities, such as LIPs, whereas during the colder stage, it became relatively quiet without too much magma activities. Although various models have been used to explain the trigger for each of these activities, there is no consensus about the fundamental relationships between the thermal cycles and episodically geological processes. The major energy sources for Earth after ~3.8 Ga include primordial heat left from the accretion, differentiation, and the radioactive decay of heat-producing elements. Surface tectonics and magmatism control the transport of heat from the interior to the surface and most surface tectonic features of Earth are the expression of their interior dynamics. Supercontinental breakup and aggregation have occurred for many times in the Earth history, accompanied by episodic cooling and warming on the Earth surface. This breakup and aggregation regime is known as plate tectonics and is characterized by high average surface heat flow fluctuations. Based on the thermodynamic principle, a thermodynamic equilibrium equation describing the earth’s thermal cycles is established. We realized that this thermal cycle may drive Earth itself to evolve, and is the fundamental reason for the periodicity or rhythmicity of geological events such as tectonic movements, orogenies, glacial periods and biological extinctions. Following this principle, we then introduced a project of Wall Chat to compile global data or evidences using a variety of literatures in Geology of early investigations of geological events to explore the relationship between geological events and Earth’s thermal cycles. The data includes the supercontinent cycle, tectonic movement, plate tectonics, extremely hot event, extremely cold event, evaporite, marine red bed, biological evolution and extinction, sea level fluctuation, etc. The Wall Chat reveals that most of the geological events have their relation to the Earth’s thermal cycles. We found that there may exist a good correlation between the occurrence of evaporites and marine red beds and the higher temperature periods, which then provides a new perspective to understand the triggering of these events. The Wall Chat also raises an interest and important question on why are the two Great Oxidation Events (GOE) both related to the two snowball events? We have several clear objectives for the future. First, we are currently cooperating with some of the related institutes of geology to obtain additional evidence data to fill in many of the gaps in the chat; targeted areas include Paleontology, Glaciology, evaporite and red beds. Second, to understand fully the relationship between thermal cycles and, at least, most of the great geological events. Such studies, when sufficiently constrained by event data, should lead to a greatly improved understanding of the earth evolution.</p>

Achieving Human Presence in Space Exploration

2013 ◽  
Vol 22 (4) ◽  
pp. 345-349 ◽  
Author(s):  
Dan Lester
Keyword(s):  
Space Exploration ◽  
Human Cognition ◽  
Speed Of Light ◽  
Human Spaceflight ◽  
Human Presence ◽  
The Earth ◽  
New Perspective ◽  
The Way

One of the primary goals of human spaceflight has been putting human cognition on other worlds. This is at the heart of the premise of what we call space exploration. But Earth-controlled telerobotic facilities can now bring human senses to other worlds and, in that respect, the historical premise of exploration, of boots on the ground, no longer clearly applies. We have ways of achieving remote presence that we never used to have. But the distances over which this must be achieved, by humans based on the Earth, is such that the speed of light seriously handicaps their awareness and cognition. The highest quality telepresence can be achieved not only by having people on site, but also by having people close, and it is that requirement that truly mandates human spaceflight. In terms of cost, safety, and survival, getting people close is easier than getting people all the way there. It is suggested here that to the extent that space exploration is best accomplished by achieving a sense of real human off-Earth presence, that presence can be best achieved by optimally combining human spaceflight to mitigate latency, with telerobotics, to keep those humans secure. This is culturally a new perspective on exploration.

scholarly journals Meteor science from regular incoherent scatter radar ionospheric observations at Arecibo

2004 ◽  
Vol 4 (1) ◽  
pp. 805-831 ◽  
Author(s):  
M. P. Sulzer
Keyword(s):  
Event Rate ◽  
Ecliptic Plane ◽  
Line Of Sight ◽  
Statistical Interpretation ◽  
Measured Velocity ◽  
Incoherent Scatter ◽  
The Earth ◽  
Slow Part ◽  
To Come ◽  
New Perspective

Abstract. We report the observation and analysis of ionization flashes associated with the decay of meteoroids (so-called head echos) detected by the Arecibo 430 MHz radar during regular ionospheric observations in the spring and autumn equinoxes. These two periods allow pointing well-above and nearly-into the ecliptic plane at dawn when the event rate maximizes. The observation of many thousands of events allows a statistical interpretation of the results, which show that there is a strong tendency for the observed meteoroids to come from the apex as has been previously reported (Chau and Woodman, 2003). The velocity distributions agree with Janches et al. (2003) when they are directly comparable, but the azimuth scan used in these observations allows a new perspective. We have constructed a simple statistical model which takes meteor velocities as input and gives radar line of sight velocities as output. The intent is to explain the fastest part of the velocity distribution. Since the speeds interpreted from the measurements are distributed fairly narrowly about nearly 60 km/s−1, double the speed of the earth in its orbit, the obvious interpretation is that many of the meteoroids seen by the Arecibo radar are moving in orbits about the sun with similar parameters as the earth, but in the retrograde direction. However, some aspects of the measured velocity distributions suggest that this is not a complete description even for the fast part of the distribution, and it certainly says nothing about the slow part first described in Janches et al. (2003). Furthermore, we cannot conclude anything about the entire dust population since there are probably selection effects that restrict the observations to a subset of the population.

From the Heart of the Father to the Ends of the Earth: The Participation of the Church and the Baptized in the Mission of Jesus

2021 ◽  
pp. 002436392110405
Author(s):  
Herald J. Brock
Keyword(s):  
Medical Missions ◽  
Healing Ministry ◽  
Second Vatican Council ◽  
Direct Relation ◽  
Inner Life ◽  
The Earth ◽  
Vatican Council ◽  
New Perspective ◽  
The Church ◽  
The Trinity

Mission has its origin in the inner life of God; their relationships with one another define the Persons of the Trinity. The Son is eternally generated by the Father, eternally proceeding from Him. When he becomes human, this identity becomes mission. Those united to Jesus through Baptism share in his missionary personality, not only corporately as the whole Church but individually as well. Beginning with the Second Vatican Council, and developed by subsequent papal teaching, the Church has rediscovered her missionary nature with clearer reference to Christ and the Gospel, and in more direct relation to the world and its needs. The Church’s proclamation is most compelling when it is embodied by witnesses who have verified by experience the fulfillment of their humanity in a lived Christianity. This proposal is never a one-sided matter, but always involves an awareness of solidarity and reciprocity, an experience of encounter and discovery, and so becomes a journey of accompaniment and conversion for the bearer of the message. This is the rationale for widespread participation in missionary activities in the Church. Because of its affinity with the healing ministry of Jesus, medicine offers a unique possibility in this regard. Precisely because of the good they can accomplish and the challenges they can provoke, medical missions present a privileged opportunity for witness and generosity, but also for a new perspective and a changed heart for the participants. Together with those whom they serve, missionary disciples have the joy of joining the triumphal procession of Christ back into the heart of the Father.

scholarly journals From the Ottoman Empire to Post-1923

2020 ◽  
Vol 3 (2) ◽  
pp. 300-311
Author(s):  
Deniz Yonucu ◽  
Talin Suciyan
Keyword(s):  
Ottoman Empire ◽  
Armenian Genocide ◽  
Turkish Republic ◽  
The Earth ◽  
History Of ◽  
New Perspective ◽  
Modern Turkey ◽  
Armenian Population

Abstract The author of The Armenians in Modern Turkey, historian Talin Suciyan, puts the Armenian genocide survivors at the center of her research to provide a new perspective on the history of the Turkish Republic. Suciyan analyzes the experiences and lives of its Armenian population several decades after the genocide. In this interview, Deniz Yonucu speaks with Suciyan on her research and innovative anthrohistorical approach to understanding the paths that led to the annihilation of Armenians, the effects of the genocide in modern Turkey, and the importance of focusing attention on the experiences of survivors after catastrophic experiences of genocides. The survivor as described in this interview is neither a wretched of the earth, who is forced to live a tortured life, nor a subaltern whose voice cannot acquire speech. The survivor instead is an existence whose past, present and future is constantly denied, and therefore robbed from her.

7. Ecology in culture

2020 ◽  
pp. 117-129
Author(s):  
Jaboury Ghazoul
Keyword(s):  
Environmental Health ◽  
Cultural Ecology ◽  
Deep Ecology ◽  
Environmental Challenges ◽  
The Earth ◽  
Gaia Theory ◽  
New Perspective ◽  
Ecological Science

The science of ecology is often conflated with environmentalism. ‘Ecology in culture’ looks at the transfer of ecological insights to moral and political fields. Has ecological science enabled us to develop an ecological conscience that will help the planet withstand unprecedented environmental challenges? Transformative movements include Gaia Theory (the idea of the earth as a living, self-regulating organism); Deep Ecology (a movement that disregards a human-centred approach); Cultural Ecology (which advocates for our environment’s ability to sustain culture); and Sacred Ecology (a new perspective on how to interact with nature and the elements. To restore environmental health, should we rebuild a cultural ecology?

scholarly journals Meteoroid velocity distribution derived from head echo data collected at Arecibo during regular world day observations

2004 ◽  
Vol 4 (4) ◽  
pp. 947-954 ◽  
Author(s):  
M. P. Sulzer
Keyword(s):  
Velocity Distribution ◽  
Ecliptic Plane ◽  
Statistical Interpretation ◽  
Measured Velocity ◽  
Directional Information ◽  
The Earth ◽  
Slow Part ◽  
Head Echo ◽  
To Come ◽  
New Perspective

Abstract. We report the observation and analysis of ionization flashes associated with the decay of meteoroids (so-called head echos) detected by the Arecibo 430 MHz radar during regular ionospheric observations in the spring and autumn equinoxes. These two periods allow pointing well-above and nearly-into the ecliptic plane at dawn when the event rate maximizes. The observation of many thousands of events allows a statistical interpretation of the results, which show that there is a strong tendency for the observed meteoroids to come from the apex as has been previously reported (Chau and Woodman, 2004). The velocity distributions agree with Janches et al. (2003a) when they are directly comparable, but the azimuth scan used in these observations allows a new perspective. We have constructed a simple statistical model which takes meteor velocities as input and gives radar line of sight velocities as output. The intent is to explain the fastest part of the velocity distribution. Since the speeds interpreted from the measurements are distributed fairly narrowly about nearly 60 km s-1, double the speed of the earth in its orbit, is consistent with the interpretation that many of the meteoroids seen by the Arecibo radar are moving in orbits about the sun with similar parameters as the earth, but in the retrograde direction. However, it is the directional information obtained from the beam-swinging radar experiment and the speed that together provide the evidence for this interpretation. Some aspects of the measured velocity distributions suggest that this is not a complete description even for the fast part of the distribution, and it certainly says nothing about the slow part first described in Janches et al. (2003a). Furthermore, we cannot conclude anything about the entire dust population since there are probably selection effects that restrict the observations to a subset of the population.

The Birth of the Earth

Impact! ◽  
1996 ◽  
Author(s):  
Gerrit L. Verschuur
Keyword(s):  
Stone Tools ◽  
Human Mind ◽  
Planetary Motion ◽  
Human Beings ◽  
Johannes Kepler ◽  
The Earth ◽  
Cave Paintings ◽  
New Perspective ◽  
Life On Earth ◽  
The Universe

As we apprehend the likelihood of an almost inconceivable cosmic impact occurring again at some time in the future, it is worth considering how we got to be here in the first place. The quest for an explanation of our origins is, of course, as old as the ability of humans to conceptualize questions and consider answers. Our species has probably been able to do that for hundreds of thousands of years, since well before evidence of its ability to comprehend was etched in cave paintings, perhaps back in an age when stone tools began to be patiently chipped out of flint rock. But when questions about origins were first hesitatingly formulated, answers could only be invented. There was no way any human beings could have known back then what we know now about the nature of the universe and its contents. Our collective ability to understand the world in which we live received an enormous impetus starting about 400 years ago when the scientific method for approaching reality was first practiced. That was when it was discovered that through experiment and observation, and above all through measurement, it became possible to unravel the secrets of the universe. That was when Galileo first pointed a telescope at the heavens, William Gilbert experimented with natural magnets, and Johannes Kepler discovered the laws of planetary motion. Since then, our species has gathered a stunning new perspective on the nature of this universe and its origins, a perspective that has relegated to the back burner of human thought most of the fantasies that have so long held sway over the human mind. As a result of the high technology that has emerged during this century, scientists have learned to probe into the depths of matter and into the farthest reaches of space. In the course of this exploration, astronomers, in particular, have learned that the universe has its roots in awesome violence and that the birth of the earth and moon were accompanied by what, from our perspective, would be considered catastrophic events. Were anything remotely similar to occur today, all life on earth would be instantly terminated.

Thomas Baldwin and the Creation of the Hot Air Balloon as a Scientific and Aesthetic Site of Knowledge in the Late Eighteenth Century

2020 ◽  
Vol 169 (1) ◽  
pp. 1-16
Author(s):  
Fiona Amery
Keyword(s):  
Eighteenth Century ◽  
Emotional Response ◽  
Scientific Understanding ◽  
Balloon Flight ◽  
Hot Air ◽  
Late Eighteenth Century ◽  
The Earth ◽  
Aesthetic Pleasure ◽  
Late Eighteenth ◽  
New Perspective

‘But what scenes of grandeur and beauty! A tear of pure delight flashed in his eye! Of pure and exquisite delight and rapture; to look down on the unexpected change already wrought in the works of art and nature, contracted to a span by the new perspective, diminished almost beyond the bounds of credibility’.1 So wrote Thomas Baldwin in his account of his hot air balloon flight from Chester to Warrington in Lancashire on 8 September 1785. This telling description of his emotional response to the prospect of the earth from the balloon car epitomises Baldwin’s dual concern with aesthetic pleasure and scientific understanding. He felt elated viewing the land anew from his aerial position, amazed at the transformation it revealed and the experimental opportunities it presented.

scholarly journals Dialogical and Mediatory Potential of an Integral Ecology

2020 ◽  
Vol 18 (1) ◽  
pp. 23-30
Author(s):  
Stanisław Jaromi
Keyword(s):  
Ecological Crisis ◽  
Climate Protection ◽  
The Earth ◽  
The World ◽  
Spiritual Perspective ◽  
New Perspective ◽  
Point Of Reference ◽  
Integral Ecology

The encyclical Laudato si’ is a Catholic document synthesizing the reflection on the main issues related to ecology as well as to nature and climate protection. It provides a new perspective for ecological activity in the light of integral ecology principles. In many countries, this encyclical has become a point of reference for Catholics in the context of the ecological crisis, especially by the fact of its highlighting the religious and spiritual perspective and giving concrete examples of both ecological and Christian lifestyles. Chapter 5 of the encyclical outlines, moreover, the concept of dialogue that brings hope for abandoning the spiral of self-destruction in which humanity is now sinking. The concept of communicative humanism and its mechanisms i.e. actions restoring values and creating a community have been proposed to establish the platform for this dialogue. The program is based on personalism and Christian hermeneutics, and its goal is a Church interested in the world and its problems, a one which on a par with others wants to say STOP to the destruction of the earth and its irresponsible exploitation.

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