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Posts Tagged ‘Gulf of California’

Significant Earthquakes Strike Gulf of California

Posted by feww on September 13, 2015

M6.6 quake strikes SSW of Topolobampo, Mexico

Centered at 25.348°N, 109.402°W the quake occurred at a depth of about 10km, reported USGS/EHP.

The event was preceded by at least two foreshocks and one aftershock, as of posting.

M5.2, 45km SW of Topolobampo, Mexico 2015-09-13 08:27:17 UTC 10.0 km
M6.6, 59km SSW of Topolobampo, Mexico 2015-09-13 08:14:12 UTC 10.0 km
M5.3, 56km SSW of Topolobampo, Mexico 2015-09-13 07:57:40 UTC 20.8 km
M4.9, 55km SSW of Topolobampo, Mexico 2015-09-13 07:40:40 UTC 10.0 km

Nearby Cities

  • 59km (37mi) SSW of Topolobampo, Mexico
  • 79km (49mi) SSW of Los Mochis, Mexico
  • 85km (53mi) SW of General Juan Jose Rios, Mexico
  • 86km (53mi) SSW of Ahome, Mexico

Latest Significant Earthquakes

5.2 45km SW of Topolobampo, Mexico 2015-09-13 08:27:17 UTC 10.0 km
6.6 59km SSW of Topolobampo, Mexico 2015-09-13 08:14:12 UTC 10.0 km
4.7 85km N of Atka, Alaska 2015-09-13 07:59:16 UTC 179.1 km
5.3 56km SSW of Topolobampo, Mexico 2015-09-13 07:57:40 UTC 20.8 km
4.8 106km SW of Altay sumu, Mongolia 2015-09-13 07:51:12 UTC 10.0 km
4.9 55km SSW of Topolobampo, Mexico 2015-09-13 07:40:40 UTC 10.0 km
4.8 223km S of L’Esperance Rock, New Zealand 2015-09-13 07:05:13 UTC 10.0 km
4.7 32km SSW of Konak, Turkey 2015-09-13 02:57:27 UTC 5.0 km
5.2 38km ESE of Raoul Island, New Zealand 2015-09-13 02:55:47 UTC 44.8 km
5.8 35km SE of Bilungala, Indonesia 2015-09-13 01:13:12 UTC 122.7 km
4.9 Southern East Pacific Rise 2015-09-13 00:40:26 UTC 10.0 km
4.9 74km WNW of Luwuk, Indonesia 2015-09-12 23:39:16 UTC 10.0 km
5.5 76km NNE of Lae, Papua New Guinea 2015-09-12 22:16:10 UTC 46.0 km
5.7 151km SE of L’Esperance Rock, New Zealand 2015-09-12 20:32:25 UTC 10.0 km
5.2 South of the Fiji Islands 2015-09-12 16:42:31 UTC 75.5 km
5.1 57km SSE of Shizunai, Japan 2015-09-12 13:38:02 UTC 60.5 km
4.5 10km SW of El Sauce, Nicaragua 2015-09-12 11:22:03 UTC 4.0 km
5.0 59km SE of Molibagu, Indonesia 2015-09-12 09:49:27 UTC 61.5 km
5.0 3km NE of Nueve de Julio, Argentina 2015-09-12 08:13:49 UTC 10.0 km

Posted in News Alert | Tagged: , , , | Leave a Comment »

M6.2 Quake Strikes Gulf of California

Posted by feww on October 8, 2014

SCENARIOS 070, 09, 08, 07

Strong earthquake stirs Gulf of California

Centered at 23.817°N, 108.423°W the quake occurred at a depth of 10.0km (6.2mi), said USGS/EHP.

EQ Details

Magnitude: 6.2Mw
Event Time: 2014-10-08 02:40:54 UTC
Location: 23.817°N, 108.423°W depth=10.0km (6.2mi)
Nearby Cities: 121km (75mi) WSW of El Dorado, Mexico


For detailed FIRE-EARTH Earthquake Forecasts tune into Fire-Earth Reports  daily @ 06:32UTC.

FIRE-EARTH Earthquake Forecasts for California

FIRE-EARTH Science Team has suspended its research on California seismicity to protest Internet censorship, Google’s manipulation of information, theft of FIRE-EARTH intellectual property and other reasons, as stated earlier on the blog.

The Team has suspended its research also on Japan seismicity due to the resurgence of militarism in that country and other reasons that have also been stated previously.

Posted in earhquake hazard, earthquake 2014, significant events | Tagged: , , , | Leave a Comment »

Gulf of California: Habitats to Watery Graves

Posted by feww on February 22, 2010

For Public Consumption

Damage to threatened Gulf of California habitats can be reversed

Protecting vulnerable reproduction sites key to long-term health of fish populations

Once described by Jacques Cousteau as the “world’s aquarium,” the marine ecosystems of the Gulf of California are under threat. Destructive new fishing methods are depleting the sea’s habitats, creating areas that are ghosts of their former existences (see Scripps explorations story “Threatened Gulf”.

But, as Octavio Aburto-Oropeza of Scripps Institution of Oceanography at UC San Diego will describe during a presentation at the 2010 American Association for the Advancement of Science (AAAS) annual meeting in San Diego, habitat conservation can revitalize once-depleted marine ecosystems (session: 8:30-10 a.m., Sunday, Feb. 21, Room 6D, San Diego Convention Center).

One recently emerging threat is a highly destructive fishing method called “hookah” diving in which fishermen use crude oxygen piping to walk along the seafloor for long periods. The technique is typically conducted at night when fish are resting, allowing the hookah fishermen to spear or grab large numbers of vulnerable fish and invertebrates.

Aburto-Oropeza’s findings on reversing the effects of such threats are part of a series of research studies headed by the newly launched Gulf of California Program based at Scripps Oceanography.

More than 20 different groups of high-value commercial species, including invertebrates such as blue crabs and fish such as snappers, grunts and snooks, are part of the mangrove forests of the Gulf of California, including this forest off Dazante Island inside the Loreto marine protected area. Credit: Scripps Institution of Oceanography, UC San Diego

“In these studies, whether reefs or mangroves, we are trying to show that the destruction on the coast and overexploitation in other areas are diminishing the biomass (the amount of organisms in an ecosystem) in several areas,” said Aburto-Oropeza. “With lower biomass, the large predators, the keys to a robust marine ecosystem, are missing and that causes disruption down the marine food web.”

But there is hope to counteract such damage, says Aburto-Oropeza.

One successful example is Cabo Pulmo, a little-known protected area near the southern tip of the Baja peninsula that is thriving and a living example of the benefits of protected marine areas. Restricted of fishing since 1995, Cabo Pulmo features a robust mix of sea life and flourishing fish populations. Other successes include Coronado Island inside the Loreto marine park and Los Islotes inside Espiritu Santo marine park.

“Different sites recover in different ways, but they all have increased in biomass, especially top predators,” said Aburto-Oropeza.

“The common thing is that they have reduced or eliminated fishing activity.”

Beyond simply shielding certain locations, Aburto-Oropeza’s presentation will cover new research that reveals the strategic importance of protecting areas that are key for fish species populations. In particular, these include important sites such as fish “spawning aggregation” areas, where fish converge in large numbers to reproduce at select times of the year, and sensitive nursery habitats that are vital to ensuring healthy ecosystems.

“For some species these spawning aggregation events occur two to four times per year, and can represent 100 percent of the replenishment of their populations,” said Aburto-Oropeza.

Aburto-Oropeza and others recently calculated the economic value of mangroves at roughly $37,500 per hectare per year. An ongoing study has shown that a fish species called gulf corvina provided 3,500 tons of landings in 2009 in one community, a volume worth $3 million.

Contact: Mario Aguilera
University of California – San Diego

Posted in Baja peninsula, gulf corvina, hookah, mangrove forests, Oceanography | Tagged: , , , , , | 2 Comments »